Upozornění, Hodiny a Varování NOAA SWPC

National Oceanic and Atmospheric Administration Space Weather Foreiction Center (NOAA SWPC) je oficiální vládní agentura pro vesmírné počasí ze Spojených států, která poskytuje výstrahy, časy a varování před rušivým vesmírním počasím. Níže naleznete nejnovější výstrahy, časy a varování vydané vesmírným počasím vydané SWPC NOAA.

sobota 21. prosince 2024

23:54 UTC

Space Weather Message Code: WARK04
Serial Number: 4782
Issue Time: 2024 Dec 21 2354 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4781
Valid From: 2024 Dec 21 2059 UTC
Now Valid Until: 2024 Dec 22 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.

21:02 UTC

Space Weather Message Code: ALTK04
Serial Number: 2509
Issue Time: 2024 Dec 21 2102 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 21 2059 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.

21:02 UTC

Space Weather Message Code: WARK04
Serial Number: 4781
Issue Time: 2024 Dec 21 2102 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 21 2059 UTC
Valid To: 2024 Dec 21 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.

20:26 UTC

Space Weather Message Code: ALTTP4
Serial Number: 673
Issue Time: 2024 Dec 21 2026 UTC

ALERT: Type IV Radio Emission
Begin Time: 2024 Dec 21 1942 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: 1383
Issue Time: 2024 Dec 21 2026 UTC

ALERT: Type II Radio Emission
Begin Time: 2024 Dec 21 1939 UTC
Estimated Velocity: 1314 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.

02:45 UTC

Space Weather Message Code: SUM10R
Serial Number: 852
Issue Time: 2024 Dec 21 0245 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2024 Dec 21 0037 UTC
Maximum Time: 2024 Dec 21 0038 UTC
End Time: 2024 Dec 21 0038 UTC
Duration: 1 minutes
Peak Flux: 229 sfu
Latest Penticton Noon Flux: 184 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.

01:35 UTC

Space Weather Message Code: WARK04
Serial Number: 4780
Issue Time: 2024 Dec 21 0135 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 21 0133 UTC
Valid To: 2024 Dec 21 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.

pátek 20. prosince 2024

11:29 UTC

Space Weather Message Code: SUM10R
Serial Number: 851
Issue Time: 2024 Dec 20 1129 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2024 Dec 20 1118 UTC
Maximum Time: 2024 Dec 20 1118 UTC
End Time: 2024 Dec 20 1118 UTC
Duration: 1 minutes
Peak Flux: 220 sfu
Latest Penticton Noon Flux: 176 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.

10:30 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1382
Issue Time: 2024 Dec 20 1030 UTC

ALERT: Type II Radio Emission
Begin Time: 2024 Dec 20 1013 UTC
Estimated Velocity: 726 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.

03:01 UTC

Space Weather Message Code: ALTK04
Serial Number: 2508
Issue Time: 2024 Dec 20 0301 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 20 0300 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.

00:58 UTC

Space Weather Message Code: WARK04
Serial Number: 4779
Issue Time: 2024 Dec 20 0058 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 20 0057 UTC
Valid To: 2024 Dec 20 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.

středa 18. prosince 2024

23:57 UTC

Space Weather Message Code: WARK04
Serial Number: 4778
Issue Time: 2024 Dec 18 2357 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4777
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 19 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.

17:55 UTC

Space Weather Message Code: WARK04
Serial Number: 4777
Issue Time: 2024 Dec 18 1755 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4776
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 18 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.

11:54 UTC

Space Weather Message Code: WARK04
Serial Number: 4776
Issue Time: 2024 Dec 18 1154 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4775
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 18 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.

05:54 UTC

Space Weather Message Code: WARK04
Serial Number: 4775
Issue Time: 2024 Dec 18 0554 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4774
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 18 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.

úterý 17. prosince 2024

17:54 UTC

Space Weather Message Code: WARK04
Serial Number: 4774
Issue Time: 2024 Dec 17 1754 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4773
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 18 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.

17:54 UTC

Space Weather Message Code: WARK05
Serial Number: 1957
Issue Time: 2024 Dec 17 1754 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1956
Valid From: 2024 Dec 17 0411 UTC
Now Valid Until: 2024 Dec 17 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.

11:51 UTC

Space Weather Message Code: WARK04
Serial Number: 4773
Issue Time: 2024 Dec 17 1151 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4772
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 17 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.

11:51 UTC

Space Weather Message Code: WARK05
Serial Number: 1956
Issue Time: 2024 Dec 17 1151 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1955
Valid From: 2024 Dec 17 0411 UTC
Now Valid Until: 2024 Dec 17 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.

08:07 UTC

Space Weather Message Code: ALTK05
Serial Number: 1681
Issue Time: 2024 Dec 17 0807 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Dec 17 0755 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.

05:26 UTC

Space Weather Message Code: SUMSUD
Serial Number: 282
Issue Time: 2024 Dec 17 0526 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2024 Dec 17 0519 UTC
Deviation: 24 nT
Station: Sitka

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

05:21 UTC

Space Weather Message Code: ALTK05
Serial Number: 1680
Issue Time: 2024 Dec 17 0521 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Dec 17 0518 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.

05:03 UTC

Space Weather Message Code: WARK06
Serial Number: 555
Issue Time: 2024 Dec 17 0503 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2024 Dec 17 0503 UTC
Valid To: 2024 Dec 17 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.

04:50 UTC

Space Weather Message Code: WARSUD
Serial Number: 238
Issue Time: 2024 Dec 17 0450 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2024 Dec 17 0515 UTC
Valid To: 2024 Dec 17 0600 UTC
IP Shock Passage Observed: 2024 Dec 17 0445 UTC

NOAA Space Weather Scale descriptions can be found at
www.swpc.noaa.gov/noaa-scales-explanation

04:12 UTC

Space Weather Message Code: WARK05
Serial Number: 1955
Issue Time: 2024 Dec 17 0412 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Dec 17 0411 UTC
Valid To: 2024 Dec 17 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.

pondělí 16. prosince 2024

23:41 UTC

Space Weather Message Code: WARK04
Serial Number: 4772
Issue Time: 2024 Dec 16 2341 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4771
Valid From: 2024 Dec 16 1935 UTC
Now Valid Until: 2024 Dec 17 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.

20:59 UTC

Space Weather Message Code: ALTK04
Serial Number: 2507
Issue Time: 2024 Dec 16 2059 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 16 2059 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.

19:35 UTC

Space Weather Message Code: WARK04
Serial Number: 4771
Issue Time: 2024 Dec 16 1935 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 16 1935 UTC
Valid To: 2024 Dec 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.

neděle 15. prosince 2024

17:07 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1381
Issue Time: 2024 Dec 15 1707 UTC

ALERT: Type II Radio Emission
Begin Time: 2024 Dec 15 1427 UTC
Estimated Velocity: 320 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.

sobota 14. prosince 2024

23:56 UTC

Space Weather Message Code: WARK04
Serial Number: 4770
Issue Time: 2024 Dec 14 2356 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4769
Valid From: 2024 Dec 14 1637 UTC
Now Valid Until: 2024 Dec 15 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.

16:40 UTC

Space Weather Message Code: WARK04
Serial Number: 4769
Issue Time: 2024 Dec 14 1640 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 14 1637 UTC
Valid To: 2024 Dec 14 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.

čtvrtek 12. prosince 2024

15:04 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3408
Issue Time: 2024 Dec 12 1504 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2024 Dec 12 1445 UTC
Station: GOES16




Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.

středa 11. prosince 2024

16:10 UTC

Space Weather Message Code: SUMXM5
Serial Number: 273
Issue Time: 2024 Dec 11 1610 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Dec 11 1532 UTC
Maximum Time: 2024 Dec 11 1549 UTC
End Time: 2024 Dec 11 1556 UTC
X-ray Class: M6.7
Location: S06W94
NOAA Scale: R2 - Moderate

Comment: Flare occurred from departed Region 3912.

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.

15:50 UTC

Space Weather Message Code: ALTXMF
Serial Number: 456
Issue Time: 2024 Dec 11 1550 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Dec 11 1548 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.

úterý 10. prosince 2024

07:14 UTC

Space Weather Message Code: SUMXM5
Serial Number: 272
Issue Time: 2024 Dec 10 0714 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Dec 10 0636 UTC
Maximum Time: 2024 Dec 10 0648 UTC
End Time: 2024 Dec 10 0655 UTC
X-ray Class: M6.4
Optical Class: na
Location: S18W73
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.

06:50 UTC

Space Weather Message Code: ALTXMF
Serial Number: 455
Issue Time: 2024 Dec 10 0650 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Dec 10 0647 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.

00:02 UTC

Space Weather Message Code: ALTK04
Serial Number: 2506
Issue Time: 2024 Dec 10 0002 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 09 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.

pondělí 9. prosince 2024

22:18 UTC

Space Weather Message Code: WARK04
Serial Number: 4768
Issue Time: 2024 Dec 09 2218 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 09 2217 UTC
Valid To: 2024 Dec 10 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.

02:16 UTC

Space Weather Message Code: ALTK04
Serial Number: 2505
Issue Time: 2024 Dec 09 0216 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 09 0215 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.

01:31 UTC

Space Weather Message Code: WARK04
Serial Number: 4767
Issue Time: 2024 Dec 09 0131 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 09 0130 UTC
Valid To: 2024 Dec 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 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.

neděle 8. prosince 2024

09:28 UTC

Space Weather Message Code: SUMX01
Serial Number: 182
Issue Time: 2024 Dec 08 0928 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2024 Dec 08 0850 UTC
Maximum Time: 2024 Dec 08 0906 UTC
End Time: 2024 Dec 08 0910 UTC
X-ray Class: X2.2
Optical Class: 2b
Location: S06W60
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.

09:25 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1380
Issue Time: 2024 Dec 08 0925 UTC

ALERT: Type II Radio Emission
Begin Time: 2024 Dec 08 0905 UTC
Estimated Velocity: 626 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.

09:21 UTC

Space Weather Message Code: SUM10R
Serial Number: 850
Issue Time: 2024 Dec 08 0921 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2024 Dec 08 0903 UTC
Maximum Time: 2024 Dec 08 0904 UTC
End Time: 2024 Dec 08 0906 UTC
Duration: 3 minutes
Peak Flux: 870 sfu
Latest Penticton Noon Flux: 183 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.

09:06 UTC

Space Weather Message Code: ALTXMF
Serial Number: 454
Issue Time: 2024 Dec 08 0906 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Dec 08 0905 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.

čtvrtek 5. prosince 2024

11:11 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1379
Issue Time: 2024 Dec 05 1111 UTC

ALERT: Type II Radio Emission
Begin Time: 2024 Dec 05 1040 UTC
Estimated Velocity: 456 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.

středa 4. prosince 2024

10:46 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1378
Issue Time: 2024 Dec 04 1046 UTC

ALERT: Type II Radio Emission
Begin Time: 2024 Dec 04 1004 UTC
Estimated Velocity: 423 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.

úterý 3. prosince 2024

08:55 UTC

Space Weather Message Code: WARK04
Serial Number: 4766
Issue Time: 2024 Dec 03 0855 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4765
Valid From: 2024 Dec 02 2321 UTC
Now Valid Until: 2024 Dec 03 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.

03:09 UTC

Space Weather Message Code: ALTK04
Serial Number: 2504
Issue Time: 2024 Dec 03 0309 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Dec 03 0259 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.

pondělí 2. prosince 2024

23:22 UTC

Space Weather Message Code: WARK04
Serial Number: 4765
Issue Time: 2024 Dec 02 2322 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Dec 02 2321 UTC
Valid To: 2024 Dec 03 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.

sobota 30. listopadu 2024

02:42 UTC

Space Weather Message Code: ALTK05
Serial Number: 1679
Issue Time: 2024 Nov 30 0242 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2024 Nov 30 0242 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.

01:55 UTC

Space Weather Message Code: WARK05
Serial Number: 1954
Issue Time: 2024 Nov 30 0155 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2024 Nov 30 0155 UTC
Valid To: 2024 Nov 30 1500 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.

01:24 UTC

Space Weather Message Code: ALTK04
Serial Number: 2503
Issue Time: 2024 Nov 30 0124 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Nov 30 0123 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.

01:15 UTC

Space Weather Message Code: WARK04
Serial Number: 4764
Issue Time: 2024 Nov 30 0115 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Nov 30 0112 UTC
Valid To: 2024 Nov 30 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.

pátek 29. listopadu 2024

17:34 UTC

Space Weather Message Code: WATA30
Serial Number: 246
Issue Time: 2024 Nov 29 1734 UTC

CANCEL WATCH: Geomagnetic Storm Category G2 Predicted
Cancel Serial Number: 245
Original Issue Time: 2024 Nov 26 1749 UTC

Comment: G2 conditions are no longer anticipated.

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.

úterý 26. listopadu 2024

17:49 UTC

Space Weather Message Code: WATA30
Serial Number: 245
Issue Time: 2024 Nov 26 1749 UTC

WATCH: Geomagnetic Storm Category G2 Predicted

Highest Storm Level Predicted by Day:
Nov 27: None (Below G1) Nov 28: G1 (Minor) Nov 29: 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 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.

00:13 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1377
Issue Time: 2024 Nov 26 0013 UTC

ALERT: Type II Radio Emission
Begin Time: 2024 Nov 25 2200 UTC
Estimated Velocity: 490 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.

pondělí 25. listopadu 2024

21:07 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1376
Issue Time: 2024 Nov 25 2107 UTC

ALERT: Type II Radio Emission
Begin Time: 2024 Nov 25 2043 UTC
Estimated Velocity: 248 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.

08:21 UTC

Space Weather Message Code: SUM10R
Serial Number: 849
Issue Time: 2024 Nov 25 0821 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2024 Nov 25 0733 UTC
Maximum Time: 2024 Nov 25 0734 UTC
End Time: 2024 Nov 25 0736 UTC
Duration: 3 minutes
Peak Flux: 210 sfu
Latest Penticton Noon Flux: 203 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.

08:15 UTC

Space Weather Message Code: SUMXM5
Serial Number: 271
Issue Time: 2024 Nov 25 0815 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2024 Nov 25 0724 UTC
Maximum Time: 2024 Nov 25 0742 UTC
End Time: 2024 Nov 25 0802 UTC
X-ray Class: M9.4
Location: N21E90
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.

07:38 UTC

Space Weather Message Code: ALTXMF
Serial Number: 453
Issue Time: 2024 Nov 25 0738 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2024 Nov 25 0736 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.

neděle 24. listopadu 2024

23:36 UTC

Space Weather Message Code: ALTK04
Serial Number: 2502
Issue Time: 2024 Nov 24 2336 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2024 Nov 24 2328 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.

23:08 UTC

Space Weather Message Code: WARK04
Serial Number: 4763
Issue Time: 2024 Nov 24 2308 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2024 Nov 24 2308 UTC
Valid To: 2024 Nov 25 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.

pátek 22. listopadu 2024

23:16 UTC

Space Weather Message Code: WARK04
Serial Number: 4762
Issue Time: 2024 Nov 22 2316 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4761
Valid From: 2024 Nov 22 1719 UTC
Now Valid Until: 2024 Nov 23 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.