NOAA SWPC Alerts, Watches and Warnings
The National Oceanic and Atmospheric Administration Space Weather Prediction Center (NOAA SWPC) is the official space weather government agency from the United States that provides alerts, watches and warning for space weather disturbances. Below you will find the latest space weather alerts, watches and warnings issued by the NOAA SWPC.
Friday, 18 October 2024
04:00 UTC
Space Weather Message Code: WARK04
Serial Number: 4731
Issue Time: 2024 Oct 18 0400 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Oct 18 0400 UTC
Valid To: 2024 Oct 18 0900 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Wednesday, 16 October 2024
17:29 UTC
Space Weather Message Code: WARK04
Serial Number: 4730
Issue Time: 2024 Oct 16 1729 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Oct 16 1728 UTC
Valid To: 2024 Oct 16 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
08:57 UTC
Space Weather Message Code: WARK04
Serial Number: 4729
Issue Time: 2024 Oct 16 0857 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4728
Valid From: 2024 Oct 15 0800 UTC
Now Valid Until: 2024 Oct 16 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Tuesday, 15 October 2024
23:54 UTC
Space Weather Message Code: WARK04
Serial Number: 4728
Issue Time: 2024 Oct 15 2354 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4727
Valid From: 2024 Oct 15 0800 UTC
Now Valid Until: 2024 Oct 16 0900 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
19:41 UTC
Space Weather Message Code: ALTTP4
Serial Number: 668
Issue Time: 2024 Oct 15 1941 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024 Oct 15 1817 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
19:40 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1367
Issue Time: 2024 Oct 15 1940 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Oct 15 1832 UTC
Estimated Velocity: 883 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
19:39 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1366
Issue Time: 2024 Oct 15 1939 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Oct 15 1808 UTC
Estimated Velocity: 270 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
14:19 UTC
Space Weather Message Code: WARK04
Serial Number: 4727
Issue Time: 2024 Oct 15 1419 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4726
Valid From: 2024 Oct 15 0800 UTC
Now Valid Until: 2024 Oct 15 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
08:38 UTC
Space Weather Message Code: ALTK04
Serial Number: 2490
Issue Time: 2024 Oct 15 0838 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Oct 15 0820 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
07:59 UTC
Space Weather Message Code: WARK04
Serial Number: 4726
Issue Time: 2024 Oct 15 0759 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Oct 15 0800 UTC
Valid To: 2024 Oct 15 1500 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Monday, 14 October 2024
22:46 UTC
Space Weather Message Code: ALTK04
Serial Number: 2489
Issue Time: 2024 Oct 14 2246 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Oct 14 2246 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
22:37 UTC
Space Weather Message Code: WARK04
Serial Number: 4725
Issue Time: 2024 Oct 14 2237 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Oct 14 2237 UTC
Valid To: 2024 Oct 15 0600 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
00:32 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1365
Issue Time: 2024 Oct 14 0032 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Oct 14 0014 UTC
Estimated Velocity: 545 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
Sunday, 13 October 2024
20:42 UTC
Space Weather Message Code: WATA20
Serial Number: 1016
Issue Time: 2024 Oct 13 2042 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Oct 14: None (Below G1) Oct 15: None (Below G1) Oct 16: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Saturday, 12 October 2024
20:45 UTC
Space Weather Message Code: WARK04
Serial Number: 4724
Issue Time: 2024 Oct 12 2045 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4723
Valid From: 2024 Oct 10 1350 UTC
Now Valid Until: 2024 Oct 13 0300 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
10:51 UTC
Space Weather Message Code: ALTK05
Serial Number: 1673
Issue Time: 2024 Oct 12 1051 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 12 1051 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
10:36 UTC
Space Weather Message Code: WARK05
Serial Number: 1947
Issue Time: 2024 Oct 12 1036 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1946
Valid From: 2024 Oct 10 1506 UTC
Now Valid Until: 2024 Oct 12 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
10:34 UTC
Space Weather Message Code: WARK04
Serial Number: 4723
Issue Time: 2024 Oct 12 1034 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4722
Valid From: 2024 Oct 10 1350 UTC
Now Valid Until: 2024 Oct 12 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Friday, 11 October 2024
17:14 UTC
Space Weather Message Code: WATA50
Serial Number: 83
Issue Time: 2024 Oct 11 1714 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Oct 11: G3 (Strong) Oct 12: G1 (Minor) Oct 13: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: This supersedes the previous G4 (Severe) geomagnetic storm watch for 11 Oct as potential has diminished. A G3 (Strong) geomagnetic storm watch remains in place for 11 Oct, along with a G1 (Minor) watch for 12 Oct, as CME effects continue to wane.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
16:50 UTC
Space Weather Message Code: WARK06
Serial Number: 552
Issue Time: 2024 Oct 11 1650 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 551
Valid From: 2024 Oct 10 1506 UTC
Now Valid Until: 2024 Oct 11 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
16:49 UTC
Space Weather Message Code: WARK05
Serial Number: 1946
Issue Time: 2024 Oct 11 1649 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1945
Valid From: 2024 Oct 10 1506 UTC
Now Valid Until: 2024 Oct 12 0600 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
16:45 UTC
Space Weather Message Code: WARK04
Serial Number: 4722
Issue Time: 2024 Oct 11 1645 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4721
Valid From: 2024 Oct 10 1350 UTC
Now Valid Until: 2024 Oct 12 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
15:00 UTC
Space Weather Message Code: ALTK07
Serial Number: 177
Issue Time: 2024 Oct 11 1500 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Oct 11 1459 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
13:28 UTC
Space Weather Message Code: ALTK06
Serial Number: 610
Issue Time: 2024 Oct 11 1328 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Oct 11 1322 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
12:40 UTC
Space Weather Message Code: ALTK05
Serial Number: 1672
Issue Time: 2024 Oct 11 1240 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 11 1234 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
11:44 UTC
Space Weather Message Code: WARK04
Serial Number: 4721
Issue Time: 2024 Oct 11 1144 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4720
Valid From: 2024 Oct 10 1350 UTC
Now Valid Until: 2024 Oct 11 2100 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
11:44 UTC
Space Weather Message Code: WARK06
Serial Number: 551
Issue Time: 2024 Oct 11 1144 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 550
Valid From: 2024 Oct 10 1506 UTC
Now Valid Until: 2024 Oct 11 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
11:44 UTC
Space Weather Message Code: WARK05
Serial Number: 1945
Issue Time: 2024 Oct 11 1144 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1944
Valid From: 2024 Oct 10 1506 UTC
Now Valid Until: 2024 Oct 11 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
11:44 UTC
Space Weather Message Code: WARK07
Serial Number: 120
Issue Time: 2024 Oct 11 1144 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 119
Valid From: 2024 Oct 10 1541 UTC
Now Valid Until: 2024 Oct 11 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
11:20 UTC
Space Weather Message Code: SUMPX1
Serial Number: 117
Issue Time: 2024 Oct 11 1120 UTC
SUMMARY: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2024 Oct 09 0505 UTC
Maximum Time: 2024 Oct 10 1515 UTC
End Time: 2024 Oct 11 0320 UTC
Maximum 10MeV Flux: 1810 pfu
NOAA Scale: S3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
11:20 UTC
Space Weather Message Code: WARPX1
Serial Number: 580
Issue Time: 2024 Oct 11 1120 UTC
CANCEL WARNING: Proton 10MeV Integral Flux above 10pfu expected
Cancel Serial Number: 579
Original Issue Time: 2024 Oct 09 0438 UTC
Comment: Conditions have subsided.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
10:12 UTC
Space Weather Message Code: ALTK07
Serial Number: 176
Issue Time: 2024 Oct 11 1012 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Oct 11 1012 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
09:39 UTC
Space Weather Message Code: ALTK06
Serial Number: 609
Issue Time: 2024 Oct 11 0939 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Oct 11 0939 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
09:26 UTC
Space Weather Message Code: ALTK05
Serial Number: 1671
Issue Time: 2024 Oct 11 0926 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 11 0925 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
08:48 UTC
Space Weather Message Code: ALTK08
Serial Number: 48
Issue Time: 2024 Oct 11 0848 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024 Oct 11 0848 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
07:42 UTC
Space Weather Message Code: ALTK07
Serial Number: 175
Issue Time: 2024 Oct 11 0742 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Oct 11 0742 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
06:27 UTC
Space Weather Message Code: ALTK06
Serial Number: 608
Issue Time: 2024 Oct 11 0627 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Oct 11 0619 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
06:16 UTC
Space Weather Message Code: ALTK05
Serial Number: 1670
Issue Time: 2024 Oct 11 0616 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 11 0611 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
05:50 UTC
Space Weather Message Code: SUM10R
Serial Number: 843
Issue Time: 2024 Oct 11 0550 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Oct 11 0533 UTC
Maximum Time: 2024 Oct 11 0533 UTC
End Time: 2024 Oct 11 0533 UTC
Duration: 1 minutes
Peak Flux: 340 sfu
Latest Penticton Noon Flux: 216 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
05:16 UTC
Space Weather Message Code: WARK07
Serial Number: 119
Issue Time: 2024 Oct 11 0516 UTC
EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
Extension to Serial Number: 118
Valid From: 2024 Oct 10 1541 UTC
Now Valid Until: 2024 Oct 11 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
05:15 UTC
Space Weather Message Code: ALTK08
Serial Number: 47
Issue Time: 2024 Oct 11 0515 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024 Oct 11 0510 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
04:39 UTC
Space Weather Message Code: ALTK07
Serial Number: 174
Issue Time: 2024 Oct 11 0439 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Oct 11 0432 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
04:20 UTC
Space Weather Message Code: ALTK06
Serial Number: 607
Issue Time: 2024 Oct 11 0420 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Oct 11 0413 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
03:33 UTC
Space Weather Message Code: ALTK05
Serial Number: 1669
Issue Time: 2024 Oct 11 0333 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 11 0325 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
02:11 UTC
Space Weather Message Code: ALTK08
Serial Number: 46
Issue Time: 2024 Oct 11 0211 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024 Oct 11 0207 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
01:08 UTC
Space Weather Message Code: SUMPX2
Serial Number: 53
Issue Time: 2024 Oct 11 0108 UTC
SUMMARY: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2024 Oct 09 0740 UTC
Maximum Time: 2024 Oct 10 1515 UTC
End Time: 2024 Oct 10 2110 UTC
Maximum 10MeV Flux: 1811 pfu
NOAA Scale: S3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
00:47 UTC
Space Weather Message Code: ALTK07
Serial Number: 173
Issue Time: 2024 Oct 11 0047 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Oct 11 0042 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
00:25 UTC
Space Weather Message Code: ALTK06
Serial Number: 606
Issue Time: 2024 Oct 11 0025 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Oct 11 0019 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
00:19 UTC
Space Weather Message Code: ALTK05
Serial Number: 1668
Issue Time: 2024 Oct 11 0019 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 11 0014 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Thursday, 10 October 2024
22:58 UTC
Space Weather Message Code: ALTK08
Serial Number: 45
Issue Time: 2024 Oct 10 2258 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024 Oct 10 2252 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
21:52 UTC
Space Weather Message Code: ALTK07
Serial Number: 172
Issue Time: 2024 Oct 10 2152 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Oct 10 2146 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
21:29 UTC
Space Weather Message Code: ALTK06
Serial Number: 605
Issue Time: 2024 Oct 10 2129 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Oct 10 2126 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
21:25 UTC
Space Weather Message Code: WARPX1
Serial Number: 579
Issue Time: 2024 Oct 10 2125 UTC
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 578
Valid From: 2024 Oct 09 0440 UTC
Now Valid Until: 2024 Oct 11 2359 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S2 - Moderate
Comment: S1-S2 levels are expected
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
21:13 UTC
Space Weather Message Code: ALTK05
Serial Number: 1667
Issue Time: 2024 Oct 10 2113 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 10 2107 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
20:37 UTC
Space Weather Message Code: ALTK08
Serial Number: 44
Issue Time: 2024 Oct 10 2037 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024 Oct 10 2032 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
19:57 UTC
Space Weather Message Code: SUMPX3
Serial Number: 20
Issue Time: 2024 Oct 10 1957 UTC
SUMMARY: Proton Event 10MeV Integral Flux exceeded 1000pfu
Begin Time: 2024 Oct 09 1240 UTC
Maximum Time: 2024 Oct 10 1515 UTC
End Time: 2024 Oct 10 1545 UTC
Maximum 10MeV Flux: 1810 pfu
NOAA Scale: S3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
18:58 UTC
Space Weather Message Code: ALTK07
Serial Number: 171
Issue Time: 2024 Oct 10 1858 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Oct 10 1853 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
18:31 UTC
Space Weather Message Code: ALTK06
Serial Number: 604
Issue Time: 2024 Oct 10 1831 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Oct 10 1826 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
18:23 UTC
Space Weather Message Code: ALTK05
Serial Number: 1666
Issue Time: 2024 Oct 10 1823 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 10 1819 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
17:05 UTC
Space Weather Message Code: ALTK08
Serial Number: 43
Issue Time: 2024 Oct 10 1705 UTC
ALERT: Geomagnetic K-index of 8, 9-
Threshold Reached: 2024 Oct 10 1657 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G4 - Severe
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
15:52 UTC
Space Weather Message Code: ALTK07
Serial Number: 170
Issue Time: 2024 Oct 10 1552 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Oct 10 1549 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
15:42 UTC
Space Weather Message Code: WARK07
Serial Number: 118
Issue Time: 2024 Oct 10 1542 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2024 Oct 10 1541 UTC
Valid To: 2024 Oct 11 0600 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
15:37 UTC
Space Weather Message Code: ALTK06
Serial Number: 603
Issue Time: 2024 Oct 10 1537 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Oct 10 1537 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
15:25 UTC
Space Weather Message Code: ALTK05
Serial Number: 1665
Issue Time: 2024 Oct 10 1525 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 10 1521 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
15:25 UTC
Space Weather Message Code: SUMSUD
Serial Number: 280
Issue Time: 2024 Oct 10 1525 UTC
SUMMARY: Geomagnetic Sudden Impulse
Observed: 2024 Oct 10 1515 UTC
Deviation: 36 nT
Station: Boulder
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
15:24 UTC
Space Weather Message Code: ALTK04
Serial Number: 2488
Issue Time: 2024 Oct 10 1524 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Oct 10 1520 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
15:07 UTC
Space Weather Message Code: WARK06
Serial Number: 550
Issue Time: 2024 Oct 10 1507 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2024 Oct 10 1506 UTC
Valid To: 2024 Oct 11 1200 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
15:06 UTC
Space Weather Message Code: WARK05
Serial Number: 1944
Issue Time: 2024 Oct 10 1506 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Oct 10 1506 UTC
Valid To: 2024 Oct 11 1200 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
15:01 UTC
Space Weather Message Code: WARSUD
Serial Number: 236
Issue Time: 2024 Oct 10 1501 UTC
WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2024 Oct 10 1501 UTC
Valid To: 2024 Oct 10 1530 UTC
IP Shock Passage Observed: 2024 Oct 10 1449 UTC
Comment: Average wind speed is around 700 km/s, so expected arrival is somewhere between 15:15 and 15:45 UTC.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
13:51 UTC
Space Weather Message Code: WARK04
Serial Number: 4720
Issue Time: 2024 Oct 10 1351 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Oct 10 1350 UTC
Valid To: 2024 Oct 11 1200 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
07:59 UTC
Space Weather Message Code: SUMPC0
Serial Number: 36
Issue Time: 2024 Oct 10 0759 UTC
SUMMARY: Proton Event 100MeV Integral Flux exceeded 1pfu
Begin Time: 2024 Oct 09 0350 UTC
Maximum Time: 2024 Oct 09 0805 UTC
End Time: 2024 Oct 10 0440 UTC
Maximum 100MeV Flux: 4 pfu
Comment: This Summary marks the end of the 100 MeV proton event.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Wednesday, 9 October 2024
23:56 UTC
Space Weather Message Code: WARPC0
Serial Number: 111
Issue Time: 2024 Oct 09 2356 UTC
EXTENDED WARNING: Proton 100MeV Integral Flux above 1pfu expected
Extension to Serial Number: 110
Valid From: 2024 Oct 09 0333 UTC
Now Valid Until: 2024 Oct 10 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.
23:55 UTC
Space Weather Message Code: WARPX1
Serial Number: 578
Issue Time: 2024 Oct 09 2355 UTC
EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
Extension to Serial Number: 577
Valid From: 2024 Oct 09 0440 UTC
Now Valid Until: 2024 Oct 10 2359 UTC
Warning Condition: Persistence
Predicted NOAA Scale: S3 - Strong
Comment: S2-S3 levels are expected
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
23:37 UTC
Space Weather Message Code: SUMXM5
Serial Number: 264
Issue Time: 2024 Oct 09 2337 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Oct 09 2259 UTC
Maximum Time: 2024 Oct 09 2312 UTC
End Time: 2024 Oct 09 2321 UTC
X-ray Class: M7.7
Optical Class: na
Location: S13W90
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
23:13 UTC
Space Weather Message Code: ALTXMF
Serial Number: 442
Issue Time: 2024 Oct 09 2313 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Oct 09 2309 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
17:24 UTC
Space Weather Message Code: ALTPX3
Serial Number: 32
Issue Time: 2024 Oct 09 1724 UTC
ALERT: Proton Event 10MeV Integral Flux exceeded 1000pfu
Begin Time: 2024 Oct 09 1705 UTC
NOAA Scale: S3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience increasing radiation exposures. Astronauts on EVA (extra-vehicular activity) are exposed to elevated radiation levels.
Spacecraft - Single-event upsets to satellite operations, noise in imaging systems, and slight reduction of efficiency in solar panels are likely.
Radio - Degraded or episodically blacked-out polar HF (high frequency) radio propagation.
16:18 UTC
Space Weather Message Code: ALTTP4
Serial Number: 667
Issue Time: 2024 Oct 09 1618 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024 Oct 09 1546 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
16:06 UTC
Space Weather Message Code: SUMX01
Serial Number: 177
Issue Time: 2024 Oct 09 1606 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024 Oct 09 1544 UTC
Maximum Time: 2024 Oct 09 1547 UTC
End Time: 2024 Oct 09 1553 UTC
X-ray Class: X1.4
Location: S10W90
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
16:03 UTC
Space Weather Message Code: SUM10R
Serial Number: 842
Issue Time: 2024 Oct 09 1603 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Oct 09 1544 UTC
Maximum Time: 2024 Oct 09 1545 UTC
End Time: 2024 Oct 09 1547 UTC
Duration: 3 minutes
Peak Flux: 2300 sfu
Latest Penticton Noon Flux: 225 sfu
Comment: Castelli U Burst
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
15:48 UTC
Space Weather Message Code: ALTXMF
Serial Number: 441
Issue Time: 2024 Oct 09 1548 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Oct 09 1545 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
13:49 UTC
Space Weather Message Code: WARK04
Serial Number: 4719
Issue Time: 2024 Oct 09 1349 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4718
Valid From: 2024 Oct 06 1506 UTC
Now Valid Until: 2024 Oct 09 2100 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
13:47 UTC
Space Weather Message Code: ALTK04
Serial Number: 2487
Issue Time: 2024 Oct 09 1347 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Oct 09 1340 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
12:55 UTC
Space Weather Message Code: ALTPX3
Serial Number: 31
Issue Time: 2024 Oct 09 1255 UTC
ALERT: Proton Event 10MeV Integral Flux exceeded 1000pfu
Begin Time: 2024 Oct 09 1240 UTC
NOAA Scale: S3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience increasing radiation exposures. Astronauts on EVA (extra-vehicular activity) are exposed to elevated radiation levels.
Spacecraft - Single-event upsets to satellite operations, noise in imaging systems, and slight reduction of efficiency in solar panels are likely.
Radio - Degraded or episodically blacked-out polar HF (high frequency) radio propagation.
12:33 UTC
Space Weather Message Code: WATA99
Serial Number: 8
Issue Time: 2024 Oct 09 1233 UTC
WATCH: Geomagnetic Storm Category G4 or Greater Predicted
Highest Storm Level Predicted by Day:
Oct 10: G4 (Severe) Oct 11: G4 (Severe) Oct 12: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 45 degrees Geomagnetic Latitude.
Induced Currents - Possible widespread voltage control problems and some protective systems may mistakenly trip out key assets from the power grid. Induced pipeline currents intensify.
Spacecraft - Systems may experience surface charging; increased drag on low earth orbit satellites, and tracking and orientation problems may occur.
Navigation - Satellite navigation (GPS) degraded or inoperable for hours.
Radio - HF (high frequency) radio propagation sporadic or blacked out.
Aurora - Aurora may be seen as low as Alabama and northern California.
08:01 UTC
Space Weather Message Code: ALTPX2
Serial Number: 74
Issue Time: 2024 Oct 09 0801 UTC
ALERT: Proton Event 10MeV Integral Flux exceeded 100pfu
Begin Time: 2024 Oct 09 0740 UTC
NOAA Scale: S2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radiation - Passengers and crew in high latitude, high altitude flights may experience small, increased radiation exposures.
Spacecraft - Infrequent single-event upsets to satellites are possible.
Radio - Small effects on polar HF (high frequency) propagation resulting in fades at lower frequencies.
05:58 UTC
Space Weather Message Code: ALTK05
Serial Number: 1664
Issue Time: 2024 Oct 09 0558 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 09 0554 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
05:22 UTC
Space Weather Message Code: ALTPX1
Serial Number: 352
Issue Time: 2024 Oct 09 0522 UTC
ALERT: Proton Event 10MeV Integral Flux exceeded 10pfu
Begin Time: 2024 Oct 09 0505 UTC
NOAA Scale: S1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
04:38 UTC
Space Weather Message Code: WARPX1
Serial Number: 577
Issue Time: 2024 Oct 09 0438 UTC
WARNING: Proton 10MeV Integral Flux above 10pfu expected
Valid From: 2024 Oct 09 0440 UTC
Valid To: 2024 Oct 09 2359 UTC
Warning Condition: Onset
Predicted NOAA Scale: S1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.
04:31 UTC
Space Weather Message Code: SUM10R
Serial Number: 841
Issue Time: 2024 Oct 09 0431 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Oct 09 0136 UTC
Maximum Time: 2024 Oct 09 0203 UTC
End Time: 2024 Oct 09 0400 UTC
Duration: 174 minutes
Peak Flux: 2700 sfu
Latest Penticton Noon Flux: 225 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
04:08 UTC
Space Weather Message Code: ALTPC0
Serial Number: 52
Issue Time: 2024 Oct 09 0408 UTC
ALERT: Proton Event 100MeV Integral Flux exceeded 1pfu
Begin Time: 2024 Oct 09 0350 UTC
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.
03:33 UTC
Space Weather Message Code: WARPC0
Serial Number: 110
Issue Time: 2024 Oct 09 0333 UTC
WARNING: Proton 100MeV Integral Flux above 1pfu expected
Valid From: 2024 Oct 09 0333 UTC
Valid To: 2024 Oct 09 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: An enhancement in the energetic portion of the solar radiation spectrum may indicate increased biological risk to astronauts or passengers and crew in high latitude, high altitude flights. Additionally, energetic particles may represent an increased risk to all satellite systems susceptible to single event effects. This information should be used in conjunction with the current Solar Radiation Storm conditions when assessing overall impact.
02:50 UTC
Space Weather Message Code: SUMX01
Serial Number: 176
Issue Time: 2024 Oct 09 0250 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024 Oct 09 0125 UTC
Maximum Time: 2024 Oct 09 0156 UTC
End Time: 2024 Oct 09 0243 UTC
X-ray Class: X1.8
Optical Class: na
Location: N12W11
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
02:37 UTC
Space Weather Message Code: WARK05
Serial Number: 1943
Issue Time: 2024 Oct 09 0237 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1942
Valid From: 2024 Oct 08 2317 UTC
Now Valid Until: 2024 Oct 09 1500 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
02:36 UTC
Space Weather Message Code: WARK04
Serial Number: 4718
Issue Time: 2024 Oct 09 0236 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4717
Valid From: 2024 Oct 06 1506 UTC
Now Valid Until: 2024 Oct 09 1800 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
02:00 UTC
Space Weather Message Code: ALTTP4
Serial Number: 666
Issue Time: 2024 Oct 09 0200 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024 Oct 09 0143 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
02:00 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1364
Issue Time: 2024 Oct 09 0200 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Oct 09 0144 UTC
Estimated Velocity: 5176 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
01:46 UTC
Space Weather Message Code: ALTXMF
Serial Number: 440
Issue Time: 2024 Oct 09 0146 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Oct 09 0143 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
Tuesday, 8 October 2024
23:54 UTC
Space Weather Message Code: WARK04
Serial Number: 4717
Issue Time: 2024 Oct 08 2354 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4716
Valid From: 2024 Oct 06 1506 UTC
Now Valid Until: 2024 Oct 09 0600 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
23:17 UTC
Space Weather Message Code: WARK05
Serial Number: 1942
Issue Time: 2024 Oct 08 2317 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Oct 08 2317 UTC
Valid To: 2024 Oct 09 0300 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
20:23 UTC
Space Weather Message Code: WATA20
Serial Number: 1015
Issue Time: 2024 Oct 08 2023 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Oct 09: None (Below G1) Oct 10: None (Below G1) Oct 11: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
20:05 UTC
Space Weather Message Code: ALTK04
Serial Number: 2486
Issue Time: 2024 Oct 08 2005 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Oct 08 1936 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
17:32 UTC
Space Weather Message Code: ALTK04
Serial Number: 2485
Issue Time: 2024 Oct 08 1732 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Oct 08 1711 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
13:03 UTC
Space Weather Message Code: ALTK04
Serial Number: 2484
Issue Time: 2024 Oct 08 1303 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Oct 08 1259 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
08:45 UTC
Space Weather Message Code: ALTK06
Serial Number: 602
Issue Time: 2024 Oct 08 0845 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Oct 08 0836 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
08:34 UTC
Space Weather Message Code: ALTK05
Serial Number: 1663
Issue Time: 2024 Oct 08 0834 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 08 0823 UTC
Synoptic Period: 0600-0900 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
05:17 UTC
Space Weather Message Code: ALTK07
Serial Number: 169
Issue Time: 2024 Oct 08 0517 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Oct 08 0512 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
05:06 UTC
Space Weather Message Code: ALTK06
Serial Number: 601
Issue Time: 2024 Oct 08 0506 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Oct 08 0458 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
04:19 UTC
Space Weather Message Code: ALTK05
Serial Number: 1662
Issue Time: 2024 Oct 08 0419 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 08 0409 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
02:47 UTC
Space Weather Message Code: WARK04
Serial Number: 4716
Issue Time: 2024 Oct 08 0247 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4715
Valid From: 2024 Oct 06 1506 UTC
Now Valid Until: 2024 Oct 08 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
02:47 UTC
Space Weather Message Code: WARK06
Serial Number: 549
Issue Time: 2024 Oct 08 0247 UTC
EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 548
Valid From: 2024 Oct 07 1800 UTC
Now Valid Until: 2024 Oct 08 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
02:47 UTC
Space Weather Message Code: WARK05
Serial Number: 1941
Issue Time: 2024 Oct 08 0247 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1940
Valid From: 2024 Oct 06 2220 UTC
Now Valid Until: 2024 Oct 08 2100 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
02:42 UTC
Space Weather Message Code: ALTK07
Serial Number: 168
Issue Time: 2024 Oct 08 0242 UTC
ALERT: Geomagnetic K-index of 7
Threshold Reached: 2024 Oct 08 0235 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
02:33 UTC
Space Weather Message Code: WARK07
Serial Number: 117
Issue Time: 2024 Oct 08 0233 UTC
WARNING: Geomagnetic K-index of 7 or greater expected
Valid From: 2024 Oct 08 0232 UTC
Valid To: 2024 Oct 08 0900 UTC
Warning Condition: Onset
NOAA Scale: G3 or greater
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
00:51 UTC
Space Weather Message Code: ALTK05
Serial Number: 1661
Issue Time: 2024 Oct 08 0051 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 08 0046 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Monday, 7 October 2024
22:09 UTC
Space Weather Message Code: ALTK05
Serial Number: 1660
Issue Time: 2024 Oct 07 2209 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 07 2202 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
21:24 UTC
Space Weather Message Code: ALTK04
Serial Number: 2483
Issue Time: 2024 Oct 07 2124 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Oct 07 2117 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
21:12 UTC
Space Weather Message Code: ALTTP4
Serial Number: 665
Issue Time: 2024 Oct 07 2112 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024 Oct 07 2007 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
20:26 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1363
Issue Time: 2024 Oct 07 2026 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Oct 07 2003 UTC
Estimated Velocity: 941 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
19:38 UTC
Space Weather Message Code: SUMX01
Serial Number: 175
Issue Time: 2024 Oct 07 1938 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024 Oct 07 1902 UTC
Maximum Time: 2024 Oct 07 1913 UTC
End Time: 2024 Oct 07 1931 UTC
X-ray Class: X2.1
Optical Class: 2b
Location: S17W59
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
19:20 UTC
Space Weather Message Code: SUM10R
Serial Number: 840
Issue Time: 2024 Oct 07 1920 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Oct 07 1906 UTC
Maximum Time: 2024 Oct 07 1907 UTC
End Time: 2024 Oct 07 1910 UTC
Duration: 4 minutes
Peak Flux: 640 sfu
Latest Penticton Noon Flux: 265 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
19:09 UTC
Space Weather Message Code: ALTXMF
Serial Number: 439
Issue Time: 2024 Oct 07 1909 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Oct 07 1907 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
18:49 UTC
Space Weather Message Code: ALTK06
Serial Number: 600
Issue Time: 2024 Oct 07 1849 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Oct 07 1845 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
18:49 UTC
Space Weather Message Code: WARK04
Serial Number: 4715
Issue Time: 2024 Oct 07 1849 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4714
Valid From: 2024 Oct 06 1506 UTC
Now Valid Until: 2024 Oct 08 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
18:48 UTC
Space Weather Message Code: WARK05
Serial Number: 1940
Issue Time: 2024 Oct 07 1848 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1939
Valid From: 2024 Oct 06 2220 UTC
Now Valid Until: 2024 Oct 08 0900 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
18:47 UTC
Space Weather Message Code: WARK06
Serial Number: 548
Issue Time: 2024 Oct 07 1847 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2024 Oct 07 1800 UTC
Valid To: 2024 Oct 08 0600 UTC
Warning Condition: Persistence
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
18:38 UTC
Space Weather Message Code: ALTK05
Serial Number: 1659
Issue Time: 2024 Oct 07 1838 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 07 1833 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
18:32 UTC
Space Weather Message Code: ALTK04
Serial Number: 2482
Issue Time: 2024 Oct 07 1832 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Oct 07 1828 UTC
Synoptic Period: 1800-2100 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
17:38 UTC
Space Weather Message Code: ALTK04
Serial Number: 2481
Issue Time: 2024 Oct 07 1738 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Oct 07 1731 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
13:38 UTC
Space Weather Message Code: WARK05
Serial Number: 1939
Issue Time: 2024 Oct 07 1338 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1938
Valid From: 2024 Oct 06 2220 UTC
Now Valid Until: 2024 Oct 07 2100 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
13:38 UTC
Space Weather Message Code: WARK04
Serial Number: 4714
Issue Time: 2024 Oct 07 1338 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4713
Valid From: 2024 Oct 06 1506 UTC
Now Valid Until: 2024 Oct 08 0000 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
13:34 UTC
Space Weather Message Code: ALTK06
Serial Number: 599
Issue Time: 2024 Oct 07 1334 UTC
ALERT: Geomagnetic K-index of 6
Threshold Reached: 2024 Oct 07 1328 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
13:33 UTC
Space Weather Message Code: WARK06
Serial Number: 547
Issue Time: 2024 Oct 07 1333 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2024 Oct 07 1332 UTC
Valid To: 2024 Oct 07 1800 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
13:01 UTC
Space Weather Message Code: ALTK05
Serial Number: 1658
Issue Time: 2024 Oct 07 1301 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 07 1256 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
12:52 UTC
Space Weather Message Code: ALTK04
Serial Number: 2480
Issue Time: 2024 Oct 07 1252 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Oct 07 1225 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
11:42 UTC
Space Weather Message Code: ALTK05
Serial Number: 1657
Issue Time: 2024 Oct 07 1142 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 07 1141 UTC
Synoptic Period: 0900-1200 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
11:09 UTC
Space Weather Message Code: WARK05
Serial Number: 1938
Issue Time: 2024 Oct 07 1109 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1937
Valid From: 2024 Oct 06 2220 UTC
Now Valid Until: 2024 Oct 07 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
06:04 UTC
Space Weather Message Code: ALTK05
Serial Number: 1656
Issue Time: 2024 Oct 07 0604 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 07 0559 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
01:02 UTC
Space Weather Message Code: WARK06
Serial Number: 546
Issue Time: 2024 Oct 07 0102 UTC
WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2024 Oct 07 0100 UTC
Valid To: 2024 Oct 07 0900 UTC
Warning Condition: Onset
NOAA Scale: G2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.
01:02 UTC
Space Weather Message Code: WARK05
Serial Number: 1937
Issue Time: 2024 Oct 07 0102 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1936
Valid From: 2024 Oct 06 2220 UTC
Now Valid Until: 2024 Oct 07 1200 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
01:02 UTC
Space Weather Message Code: WARK04
Serial Number: 4713
Issue Time: 2024 Oct 07 0102 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4712
Valid From: 2024 Oct 06 1506 UTC
Now Valid Until: 2024 Oct 07 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
00:52 UTC
Space Weather Message Code: ALTK05
Serial Number: 1655
Issue Time: 2024 Oct 07 0052 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 07 0041 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Sunday, 6 October 2024
22:45 UTC
Space Weather Message Code: ALTK05
Serial Number: 1654
Issue Time: 2024 Oct 06 2245 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 06 2240 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
Comment: RE-issued with correct Threshold Reached time of 06/2240 UTC.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
22:44 UTC
Space Weather Message Code: ALTK05
Serial Number: 1653
Issue Time: 2024 Oct 06 2244 UTC
CANCEL ALERT: Geomagnetic K-index of 5
Cancel Serial Number: 1652
Original Issue Time: 2024 Oct 06 2241 UTC
Comment: Issued with incorrect "Threshold Reached" time. Will re-issue with correct time.
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
22:41 UTC
Space Weather Message Code: ALTK05
Serial Number: 1652
Issue Time: 2024 Oct 06 2241 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Oct 06 2220 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
22:18 UTC
Space Weather Message Code: WARK05
Serial Number: 1936
Issue Time: 2024 Oct 06 2218 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Oct 06 2220 UTC
Valid To: 2024 Oct 07 0600 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
21:04 UTC
Space Weather Message Code: ALTK04
Serial Number: 2479
Issue Time: 2024 Oct 06 2104 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Oct 06 2059 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
15:07 UTC
Space Weather Message Code: WARK04
Serial Number: 4712
Issue Time: 2024 Oct 06 1507 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Oct 06 1506 UTC
Valid To: 2024 Oct 07 0900 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Friday, 4 October 2024
22:59 UTC
Space Weather Message Code: WARK04
Serial Number: 4711
Issue Time: 2024 Oct 04 2259 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Oct 04 2300 UTC
Valid To: 2024 Oct 05 1500 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
18:57 UTC
Space Weather Message Code: WATA50
Serial Number: 82
Issue Time: 2024 Oct 04 1857 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Oct 05: G3 (Strong) Oct 06: G3 (Strong) Oct 07: G1 (Minor)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
Comment: G1 (Minor) geomagnetic storm watch added to new day three (07 Oct).
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
Thursday, 3 October 2024
20:43 UTC
Space Weather Message Code: SUMXM5
Serial Number: 263
Issue Time: 2024 Oct 03 2043 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Oct 03 2009 UTC
Maximum Time: 2024 Oct 03 2028 UTC
End Time: 2024 Oct 03 2040 UTC
X-ray Class: M6.7
Location: S09W49
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
20:36 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1362
Issue Time: 2024 Oct 03 2036 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Oct 03 2012 UTC
Estimated Velocity: 1241 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
20:24 UTC
Space Weather Message Code: ALTXMF
Serial Number: 438
Issue Time: 2024 Oct 03 2024 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Oct 03 2022 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
20:13 UTC
Space Weather Message Code: WATA50
Serial Number: 81
Issue Time: 2024 Oct 03 2013 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Oct 04: G3 (Strong) Oct 05: G3 (Strong) Oct 06: G3 (Strong)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
13:43 UTC
Space Weather Message Code: SUM10R
Serial Number: 839
Issue Time: 2024 Oct 03 1343 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Oct 03 1214 UTC
Maximum Time: 2024 Oct 03 1215 UTC
End Time: 2024 Oct 03 1224 UTC
Duration: 10 minutes
Peak Flux: 3500 sfu
Latest Penticton Noon Flux: 275 sfu
Comment: Castelli-U Burst
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
12:36 UTC
Space Weather Message Code: SUMX01
Serial Number: 174
Issue Time: 2024 Oct 03 1236 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024 Oct 03 1208 UTC
Maximum Time: 2024 Oct 03 1218 UTC
End Time: 2024 Oct 03 1227 UTC
X-ray Class: X9.0
Location: S14W03
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
12:33 UTC
Space Weather Message Code: ALTTP4
Serial Number: 664
Issue Time: 2024 Oct 03 1233 UTC
ALERT: Type IV Radio Emission
Begin Time: 2024 Oct 03 1217 UTC
Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.
12:32 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1361
Issue Time: 2024 Oct 03 1232 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Oct 03 1218 UTC
Estimated Velocity: 573 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
12:32 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1360
Issue Time: 2024 Oct 03 1232 UTC
CANCEL ALERT: Type II Radio Emission
Cancel Serial Number: 1359
Original Issue Time: 2024 Oct 03 1229 UTC
Comment: Wrong sstart time entered
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
12:30 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1359
Issue Time: 2024 Oct 03 1229 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Oct 03 1218 UTC
Estimated Velocity: 573 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
12:29 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1359
Issue Time: 2024 Oct 03 1229 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Oct 03 1018 UTC
Estimated Velocity: 573 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
12:18 UTC
Space Weather Message Code: ALTXMF
Serial Number: 437
Issue Time: 2024 Oct 03 1218 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Oct 03 1215 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
Wednesday, 2 October 2024
17:01 UTC
Space Weather Message Code: WATA50
Serial Number: 80
Issue Time: 2024 Oct 02 1701 UTC
WATCH: Geomagnetic Storm Category G3 Predicted
Highest Storm Level Predicted by Day:
Oct 03: G1 (Minor) Oct 04: G3 (Strong) Oct 05: G2 (Moderate)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.
09:05 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1358
Issue Time: 2024 Oct 02 0905 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Oct 02 0544 UTC
Estimated Velocity: 1144 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
Tuesday, 1 October 2024
22:38 UTC
Space Weather Message Code: SUMX01
Serial Number: 173
Issue Time: 2024 Oct 01 2238 UTC
SUMMARY: X-ray Event exceeded X1
Begin Time: 2024 Oct 01 2158 UTC
Maximum Time: 2024 Oct 01 2220 UTC
End Time: 2024 Oct 01 2229 UTC
X-ray Class: X7.1
Optical Class: 2b
Location: S15E19
NOAA Scale: R3 - Strong
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact consists of large portions of the sunlit side of Earth, strongest at the sub-solar point.
Radio - Wide area blackout of HF (high frequency) radio communication for about an hour.
22:33 UTC
Space Weather Message Code: SUM10R
Serial Number: 838
Issue Time: 2024 Oct 01 2233 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Oct 01 2209 UTC
Maximum Time: 2024 Oct 01 2214 UTC
End Time: 2024 Oct 01 2218 UTC
Duration: 9 minutes
Peak Flux: 810 sfu
Latest Penticton Noon Flux: 245 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
22:26 UTC
Space Weather Message Code: ALTTP2
Serial Number: 1357
Issue Time: 2024 Oct 01 2226 UTC
ALERT: Type II Radio Emission
Begin Time: 2024 Oct 01 2217 UTC
Estimated Velocity: 1246 km/s
Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.
22:14 UTC
Space Weather Message Code: ALTXMF
Serial Number: 436
Issue Time: 2024 Oct 01 2214 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Oct 01 2211 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
00:26 UTC
Space Weather Message Code: SUMXM5
Serial Number: 262
Issue Time: 2024 Oct 01 0026 UTC
SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Sep 30 2337 UTC
Maximum Time: 2024 Sep 30 2359 UTC
End Time: 2024 Oct 01 0023 UTC
X-ray Class: M7.6
Optical Class: 2n
Location: S15E31
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.
Monday, 30 September 2024
23:55 UTC
Space Weather Message Code: ALTXMF
Serial Number: 435
Issue Time: 2024 Sep 30 2355 UTC
ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Sep 30 2353 UTC
NOAA Scale: R2 - Moderate
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact centered on sub-solar point on the sunlit side of Earth. Extent of blackout of HF (high frequency) radio communication dependent upon current X-ray Flux intensity. For real-time information on affected area and expected duration please see http://www.swpc.noaa.gov/products/d-region-absorption-predictions-d-rap.
01:17 UTC
Space Weather Message Code: ALTK04
Serial Number: 2478
Issue Time: 2024 Sep 30 0117 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Sep 30 0115 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Sunday, 29 September 2024
23:49 UTC
Space Weather Message Code: WARK04
Serial Number: 4710
Issue Time: 2024 Sep 29 2349 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4709
Valid From: 2024 Sep 29 0424 UTC
Now Valid Until: 2024 Sep 30 0900 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
04:25 UTC
Space Weather Message Code: WARK04
Serial Number: 4709
Issue Time: 2024 Sep 29 0425 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Sep 29 0424 UTC
Valid To: 2024 Sep 29 2359 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Thursday, 26 September 2024
05:32 UTC
Space Weather Message Code: WARK04
Serial Number: 4708
Issue Time: 2024 Sep 26 0532 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4707
Valid From: 2024 Sep 24 2245 UTC
Now Valid Until: 2024 Sep 26 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Wednesday, 25 September 2024
20:52 UTC
Space Weather Message Code: WATA20
Serial Number: 1014
Issue Time: 2024 Sep 25 2052 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Sep 26: G1 (Minor) Sep 27: None (Below G1) Sep 28: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
16:19 UTC
Space Weather Message Code: ALTK05
Serial Number: 1651
Issue Time: 2024 Sep 25 1619 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Sep 25 1619 UTC
Synoptic Period: 1500-1800 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
14:57 UTC
Space Weather Message Code: WARK05
Serial Number: 1935
Issue Time: 2024 Sep 25 1457 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1934
Valid From: 2024 Sep 24 2345 UTC
Now Valid Until: 2024 Sep 25 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
14:57 UTC
Space Weather Message Code: WARK04
Serial Number: 4707
Issue Time: 2024 Sep 25 1457 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4706
Valid From: 2024 Sep 24 2245 UTC
Now Valid Until: 2024 Sep 26 0600 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
08:38 UTC
Space Weather Message Code: WARK05
Serial Number: 1934
Issue Time: 2024 Sep 25 0838 UTC
EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1933
Valid From: 2024 Sep 24 2345 UTC
Now Valid Until: 2024 Sep 25 1500 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
05:49 UTC
Space Weather Message Code: ALTK05
Serial Number: 1650
Issue Time: 2024 Sep 25 0549 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Sep 25 0545 UTC
Synoptic Period: 0300-0600 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
00:00 UTC
Space Weather Message Code: ALTK05
Serial Number: 1649
Issue Time: 2024 Sep 25 0000 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Sep 24 2359 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
Tuesday, 24 September 2024
23:46 UTC
Space Weather Message Code: WARK05
Serial Number: 1933
Issue Time: 2024 Sep 24 2346 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Sep 24 2345 UTC
Valid To: 2024 Sep 25 0900 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
23:42 UTC
Space Weather Message Code: ALTK04
Serial Number: 2477
Issue Time: 2024 Sep 24 2342 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Sep 24 2333 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
22:44 UTC
Space Weather Message Code: WARK04
Serial Number: 4706
Issue Time: 2024 Sep 24 2244 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Sep 24 2245 UTC
Valid To: 2024 Sep 25 1800 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Monday, 23 September 2024
20:53 UTC
Space Weather Message Code: WARK04
Serial Number: 4705
Issue Time: 2024 Sep 23 2053 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4704
Valid From: 2024 Sep 23 1400 UTC
Now Valid Until: 2024 Sep 24 0900 UTC
Warning Condition: persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
20:51 UTC
Space Weather Message Code: WATA20
Serial Number: 1013
Issue Time: 2024 Sep 23 2051 UTC
WATCH: Geomagnetic Storm Category G1 Predicted
Highest Storm Level Predicted by Day:
Sep 24: None (Below G1) Sep 25: G1 (Minor) Sep 26: None (Below G1)
THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
14:34 UTC
Space Weather Message Code: ALTK04
Serial Number: 2476
Issue Time: 2024 Sep 23 1434 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Sep 23 1434 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
14:13 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3406
Issue Time: 2024 Sep 23 1413 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3405
Begin Time: 2024 Sep 19 1740 UTC
Yesterday Maximum 2MeV Flux: 2345 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
14:00 UTC
Space Weather Message Code: WARK04
Serial Number: 4704
Issue Time: 2024 Sep 23 1400 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Sep 23 1400 UTC
Valid To: 2024 Sep 23 2100 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Sunday, 22 September 2024
21:53 UTC
Space Weather Message Code: SUM10R
Serial Number: 837
Issue Time: 2024 Sep 22 2153 UTC
SUMMARY: 10cm Radio Burst
Begin Time: 2024 Sep 22 2123 UTC
Maximum Time: 2024 Sep 22 2127 UTC
End Time: 2024 Sep 22 2132 UTC
Duration: 9 minutes
Peak Flux: 540 sfu
Latest Penticton Noon Flux: 163 sfu
Description: A 10cm radio burst indicates that the electromagnetic burst associated with a solar flare at the 10cm wavelength was double or greater than the initial 10cm radio background. This can be indicative of significant radio noise in association with a solar flare. This noise is generally short-lived but can cause interference for sensitive receivers including radar, GPS, and satellite communications.
10:02 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3405
Issue Time: 2024 Sep 22 1002 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3404
Begin Time: 2024 Sep 19 1740 UTC
Yesterday Maximum 2MeV Flux: 1718 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Saturday, 21 September 2024
14:46 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3404
Issue Time: 2024 Sep 21 1446 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3403
Begin Time: 2024 Sep 19 1740 UTC
Yesterday Maximum 2MeV Flux: 1241 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Friday, 20 September 2024
14:28 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3403
Issue Time: 2024 Sep 20 1428 UTC
CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3402
Begin Time: 2024 Sep 19 1740 UTC
Yesterday Maximum 2MeV Flux: 1228 pfu
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
Thursday, 19 September 2024
18:12 UTC
Space Weather Message Code: ALTEF3
Serial Number: 3402
Issue Time: 2024 Sep 19 1812 UTC
ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2024 Sep 19 1740 UTC
Station: GOES-16
Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.
13:32 UTC
Space Weather Message Code: WARK04
Serial Number: 4703
Issue Time: 2024 Sep 19 1332 UTC
EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4702
Valid From: 2024 Sep 19 1026 UTC
Now Valid Until: 2024 Sep 19 2359 UTC
Warning Condition: Persistence
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
13:28 UTC
Space Weather Message Code: ALTK04
Serial Number: 2475
Issue Time: 2024 Sep 19 1328 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Sep 19 1320 UTC
Synoptic Period: 1200-1500 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
10:26 UTC
Space Weather Message Code: WARK04
Serial Number: 4702
Issue Time: 2024 Sep 19 1026 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Sep 19 1026 UTC
Valid To: 2024 Sep 19 1500 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
02:46 UTC
Space Weather Message Code: ALTK05
Serial Number: 1648
Issue Time: 2024 Sep 19 0246 UTC
ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Sep 19 0246 UTC
Synoptic Period: 0000-0300 UTC
Active Warning: Yes
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
01:46 UTC
Space Weather Message Code: WARK05
Serial Number: 1932
Issue Time: 2024 Sep 19 0146 UTC
WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Sep 19 0150 UTC
Valid To: 2024 Sep 19 0900 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.
00:01 UTC
Space Weather Message Code: ALTK04
Serial Number: 2474
Issue Time: 2024 Sep 19 0001 UTC
ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Sep 18 2359 UTC
Synoptic Period: 2100-2400 UTC
Active Warning: Yes
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
Wednesday, 18 September 2024
23:11 UTC
Space Weather Message Code: WARK04
Serial Number: 4701
Issue Time: 2024 Sep 18 2311 UTC
WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Sep 18 2315 UTC
Valid To: 2024 Sep 19 0900 UTC
Warning Condition: Onset
NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation
Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.
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Space weather facts
| Last X-flare | 2024/10/09 | X1.4 |
| Last M-flare | 2024/10/17 | M2.4 |
| Last geomagnetic storm | 2024/10/12 | Kp5 (G1) |
| Spotless days | |
|---|---|
| Last spotless day | 2022/06/08 |
| Monthly mean Sunspot Number | |
|---|---|
| September 2024 | 141.4 -74.1 |
| October 2024 | 154.5 +13.1 |
| Last 30 days | 150 -11.5 |