Rahvusliku Ookeani ja Atmosfääri Administratsiooni Kosmoseilma Ennustuskeskuse (NOAA SWPC). Teavitused, vaatlused ja hoiatused

USA Rahvusliku Ookeani ja Atmosfääri Administratsiooni Kosmoseilma Ennustuskeskus (NOAA SWPC) on ametlik kosmose ilma alane valitsusagentuur Ameerika Ühendriikides, kes annab teavitusi, jälgib ja hoiatab kosmosest tulevate häiringute korral. Allpool leiate viimased teavitused, vaatlused ja hoiatused mis on välja andnud Rahvusliku Ookeani ja Atmosfääri Administratsiooni Kosmoseilma Ennustuskeskus (NOAA SWPC).

neljapäev, 20 veebruar 2025

09:09 UTC

Space Weather Message Code: SUM10R
Serial Number: 860
Issue Time: 2025 Feb 20 0909 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2025 Feb 20 0444 UTC
Maximum Time: 2025 Feb 20 0444 UTC
End Time: 2025 Feb 20 0445 UTC
Duration: 1 minutes
Peak Flux: 200 sfu
Latest Penticton Noon Flux: 178 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.

08:37 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1401
Issue Time: 2025 Feb 20 0837 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Feb 19 2338 UTC
Estimated Velocity: 553 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.

kolmapäev, 19 veebruar 2025

20:58 UTC

Space Weather Message Code: ALTK04
Serial Number: 2528
Issue Time: 2025 Feb 19 2058 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Feb 19 2055 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.

20:25 UTC

Space Weather Message Code: WARK04
Serial Number: 4845
Issue Time: 2025 Feb 19 2025 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Feb 19 2024 UTC
Valid To: 2025 Feb 20 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.

08:04 UTC

Space Weather Message Code: WARK05
Serial Number: 1977
Issue Time: 2025 Feb 19 0804 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Feb 19 0804 UTC
Valid To: 2025 Feb 19 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.

07:37 UTC

Space Weather Message Code: WARK04
Serial Number: 4844
Issue Time: 2025 Feb 19 0737 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4843
Valid From: 2025 Feb 18 2234 UTC
Now Valid Until: 2025 Feb 19 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.

01:49 UTC

Space Weather Message Code: ALTK05
Serial Number: 1699
Issue Time: 2025 Feb 19 0149 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Feb 19 0149 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.

00:02 UTC

Space Weather Message Code: ALTK05
Serial Number: 1698
Issue Time: 2025 Feb 19 0002 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Feb 18 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.

teisipäev, 18 veebruar 2025

22:43 UTC

Space Weather Message Code: WARK05
Serial Number: 1975
Issue Time: 2025 Feb 18 2243 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Feb 18 2242 UTC
Valid To: 2025 Feb 19 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.

22:36 UTC

Space Weather Message Code: ALTK04
Serial Number: 2527
Issue Time: 2025 Feb 18 2236 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Feb 18 2236 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.

22:35 UTC

Space Weather Message Code: WARK04
Serial Number: 4843
Issue Time: 2025 Feb 18 2235 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Feb 18 2234 UTC
Valid To: 2025 Feb 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.

08:55 UTC

Space Weather Message Code: WARK04
Serial Number: 4842
Issue Time: 2025 Feb 18 0855 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4841
Valid From: 2025 Feb 13 0527 UTC
Now Valid Until: 2025 Feb 18 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.

esmaspäev, 17 veebruar 2025

23:47 UTC

Space Weather Message Code: WARK04
Serial Number: 4841
Issue Time: 2025 Feb 17 2347 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4840
Valid From: 2025 Feb 13 0527 UTC
Now Valid Until: 2025 Feb 18 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.

11:24 UTC

Space Weather Message Code: WARK04
Serial Number: 4840
Issue Time: 2025 Feb 17 1124 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4839
Valid From: 2025 Feb 13 0527 UTC
Now Valid Until: 2025 Feb 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 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.

04:44 UTC

Space Weather Message Code: WARK04
Serial Number: 4839
Issue Time: 2025 Feb 17 0444 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4838
Valid From: 2025 Feb 13 0527 UTC
Now Valid Until: 2025 Feb 17 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.

03:47 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3425
Issue Time: 2025 Feb 17 0347 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3424
Begin Time: 2025 Feb 11 1405 UTC
Yesterday Maximum 2MeV Flux: 3934 pfu



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

pühapäev, 16 veebruar 2025

20:20 UTC

Space Weather Message Code: WARK04
Serial Number: 4838
Issue Time: 2025 Feb 16 2020 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4837
Valid From: 2025 Feb 13 0527 UTC
Now Valid Until: 2025 Feb 17 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.

14:22 UTC

Space Weather Message Code: WARK04
Serial Number: 4837
Issue Time: 2025 Feb 16 1422 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4836
Valid From: 2025 Feb 13 0527 UTC
Now Valid Until: 2025 Feb 16 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.

04:37 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3424
Issue Time: 2025 Feb 16 0437 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3423
Begin Time: 2025 Feb 11 1405 UTC
Yesterday Maximum 2MeV Flux: 4741 pfu



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

04:18 UTC

Space Weather Message Code: WARK04
Serial Number: 4836
Issue Time: 2025 Feb 16 0418 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4835
Valid From: 2025 Feb 13 0527 UTC
Now Valid Until: 2025 Feb 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.

laupäev, 15 veebruar 2025

21:15 UTC

Space Weather Message Code: WATA20
Serial Number: 1030
Issue Time: 2025 Feb 15 2115 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Feb 16: G1 (Minor) Feb 17: None (Below G1) Feb 18: 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.

18:22 UTC

Space Weather Message Code: ALTK05
Serial Number: 1697
Issue Time: 2025 Feb 15 1822 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Feb 15 1759 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.

17:33 UTC

Space Weather Message Code: WARK05
Serial Number: 1974
Issue Time: 2025 Feb 15 1733 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1973
Valid From: 2025 Feb 15 1015 UTC
Now Valid Until: 2025 Feb 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 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.

17:32 UTC

Space Weather Message Code: WARK04
Serial Number: 4835
Issue Time: 2025 Feb 15 1732 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4834
Valid From: 2025 Feb 13 0527 UTC
Now Valid Until: 2025 Feb 16 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.

10:34 UTC

Space Weather Message Code: WARK06
Serial Number: 560
Issue Time: 2025 Feb 15 1034 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025 Feb 15 1030 UTC
Valid To: 2025 Feb 15 1500 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.

10:30 UTC

Space Weather Message Code: ALTK05
Serial Number: 1696
Issue Time: 2025 Feb 15 1030 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Feb 15 1024 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.

10:09 UTC

Space Weather Message Code: WARK05
Serial Number: 1973
Issue Time: 2025 Feb 15 1009 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Feb 15 1015 UTC
Valid To: 2025 Feb 15 1800 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.

04:51 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3423
Issue Time: 2025 Feb 15 0451 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3422
Begin Time: 2025 Feb 11 1405 UTC
Yesterday Maximum 2MeV Flux: 6603 pfu



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

04:15 UTC

Space Weather Message Code: WARK04
Serial Number: 4834
Issue Time: 2025 Feb 15 0415 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4833
Valid From: 2025 Feb 13 0527 UTC
Now Valid Until: 2025 Feb 15 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.

reede, 14 veebruar 2025

21:51 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1400
Issue Time: 2025 Feb 14 2151 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Feb 14 2107 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.

19:46 UTC

Space Weather Message Code: WATA20
Serial Number: 1029
Issue Time: 2025 Feb 14 1946 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Feb 15: G1 (Minor) Feb 16: None (Below G1) Feb 17: None (Below G1)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Comment: Isolated periods of G1 (Minor) geomagnetic storming are likely early on 15 Feb 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.

15:05 UTC

Space Weather Message Code: ALTK05
Serial Number: 1695
Issue Time: 2025 Feb 14 1505 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Feb 14 1459 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.

14:52 UTC

Space Weather Message Code: WARK05
Serial Number: 1972
Issue Time: 2025 Feb 14 1452 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1971
Valid From: 2025 Feb 13 2320 UTC
Now Valid Until: 2025 Feb 14 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.

14:51 UTC

Space Weather Message Code: WARK04
Serial Number: 4833
Issue Time: 2025 Feb 14 1451 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4832
Valid From: 2025 Feb 13 0527 UTC
Now Valid Until: 2025 Feb 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.

12:47 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3422
Issue Time: 2025 Feb 14 1247 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3421
Begin Time: 2025 Feb 11 1405 UTC
Yesterday Maximum 2MeV Flux: 2426 pfu



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

03:03 UTC

Space Weather Message Code: ALTK05
Serial Number: 1694
Issue Time: 2025 Feb 14 0303 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Feb 14 0259 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.

neljapäev, 13 veebruar 2025

23:22 UTC

Space Weather Message Code: WARK04
Serial Number: 4832
Issue Time: 2025 Feb 13 2322 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4831
Valid From: 2025 Feb 13 0527 UTC
Now Valid Until: 2025 Feb 14 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.

23:22 UTC

Space Weather Message Code: WARK05
Serial Number: 1971
Issue Time: 2025 Feb 13 2322 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Feb 13 2320 UTC
Valid To: 2025 Feb 14 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.

19:57 UTC

Space Weather Message Code: WARK04
Serial Number: 4831
Issue Time: 2025 Feb 13 1957 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4830
Valid From: 2025 Feb 13 0527 UTC
Now Valid Until: 2025 Feb 14 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.

19:36 UTC

Space Weather Message Code: WATA20
Serial Number: 1028
Issue Time: 2025 Feb 13 1936 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Feb 14: G1 (Minor) Feb 15: None (Below G1) Feb 16: 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.

14:09 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3421
Issue Time: 2025 Feb 13 1409 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3420
Begin Time: 2025 Feb 11 1405 UTC
Yesterday Maximum 2MeV Flux: 2050 pfu



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

05:37 UTC

Space Weather Message Code: ALTK04
Serial Number: 2526
Issue Time: 2025 Feb 13 0537 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Feb 13 0534 UTC
Synoptic Period: 0300-0600 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.

05:27 UTC

Space Weather Message Code: WARK04
Serial Number: 4830
Issue Time: 2025 Feb 13 0527 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Feb 13 0527 UTC
Valid To: 2025 Feb 13 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.

kolmapäev, 12 veebruar 2025

11:51 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3420
Issue Time: 2025 Feb 12 1151 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3419
Begin Time: 2025 Feb 11 1405 UTC
Yesterday Maximum 2MeV Flux: 2077 pfu



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

09:51 UTC

Space Weather Message Code: WARK04
Serial Number: 4829
Issue Time: 2025 Feb 12 0951 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4828
Valid From: 2025 Feb 09 1430 UTC
Now Valid Until: 2025 Feb 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.

teisipäev, 11 veebruar 2025

14:21 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3419
Issue Time: 2025 Feb 11 1421 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2025 Feb 11 1405 UTC
Station: GOES16




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

11:34 UTC

Space Weather Message Code: WARK04
Serial Number: 4828
Issue Time: 2025 Feb 11 1134 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4827
Valid From: 2025 Feb 09 1430 UTC
Now Valid Until: 2025 Feb 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.

esmaspäev, 10 veebruar 2025

23:36 UTC

Space Weather Message Code: WARK04
Serial Number: 4827
Issue Time: 2025 Feb 10 2336 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4826
Valid From: 2025 Feb 09 1430 UTC
Now Valid Until: 2025 Feb 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 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.

22:05 UTC

Space Weather Message Code: WATA20
Serial Number: 1027
Issue Time: 2025 Feb 10 2205 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Feb 11: None (Below G1) Feb 12: None (Below G1) Feb 13: 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.

11:47 UTC

Space Weather Message Code: WARK04
Serial Number: 4826
Issue Time: 2025 Feb 10 1147 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4825
Valid From: 2025 Feb 09 1430 UTC
Now Valid Until: 2025 Feb 10 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.

pühapäev, 9 veebruar 2025

20:41 UTC

Space Weather Message Code: ALTK05
Serial Number: 1693
Issue Time: 2025 Feb 09 2041 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Feb 09 2041 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.

20:35 UTC

Space Weather Message Code: WARK05
Serial Number: 1970
Issue Time: 2025 Feb 09 2035 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Feb 09 2030 UTC
Valid To: 2025 Feb 10 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.

17:04 UTC

Space Weather Message Code: ALTK04
Serial Number: 2525
Issue Time: 2025 Feb 09 1704 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Feb 09 1701 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.

14:30 UTC

Space Weather Message Code: WARK04
Serial Number: 4825
Issue Time: 2025 Feb 09 1430 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Feb 09 1430 UTC
Valid To: 2025 Feb 10 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.

laupäev, 8 veebruar 2025

14:52 UTC

Space Weather Message Code: WARK04
Serial Number: 4824
Issue Time: 2025 Feb 08 1452 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4823
Valid From: 2025 Feb 08 0803 UTC
Now Valid Until: 2025 Feb 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 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.

09:02 UTC

Space Weather Message Code: ALTK04
Serial Number: 2524
Issue Time: 2025 Feb 08 0902 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Feb 08 0859 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.

08:04 UTC

Space Weather Message Code: WARK04
Serial Number: 4823
Issue Time: 2025 Feb 08 0804 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Feb 08 0803 UTC
Valid To: 2025 Feb 08 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.

reede, 7 veebruar 2025

17:51 UTC

Space Weather Message Code: WATA20
Serial Number: 1026
Issue Time: 2025 Feb 07 1751 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Feb 08: None (Below G1) Feb 09: None (Below G1) Feb 10: G1 (Minor)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

Comment: A recurrent, negative polarity CH HSS will likely cause G1 (Minor) geomagnetic storm effects on 10 Feb.

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.

09:44 UTC

Space Weather Message Code: SUMXM5
Serial Number: 286
Issue Time: 2025 Feb 07 0944 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2025 Feb 07 0859 UTC
Maximum Time: 2025 Feb 07 0921 UTC
End Time: 2025 Feb 07 0936 UTC
X-ray Class: M7.5
Location: N11W39
NOAA Scale: R2 - Moderate

Comment: 20% chance of an associated proton event later on the UTC day

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.

09:16 UTC

Space Weather Message Code: ALTXMF
Serial Number: 475
Issue Time: 2025 Feb 07 0916 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Feb 07 0914 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.

neljapäev, 6 veebruar 2025

12:49 UTC

Space Weather Message Code: SUMXM5
Serial Number: 285
Issue Time: 2025 Feb 06 1249 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2025 Feb 06 1047 UTC
Maximum Time: 2025 Feb 06 1104 UTC
End Time: 2025 Feb 06 1116 UTC
X-ray Class: M7.6
Location: N07W17
NOAA Scale: R2 - Moderate

Comment: Tenflare at 06/1058 with peak 8100 sfu

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.

11:11 UTC

Space Weather Message Code: SUM10R
Serial Number: 859
Issue Time: 2025 Feb 06 1111 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2025 Feb 06 1058 UTC
Maximum Time: 2025 Feb 06 1058 UTC
End Time: 2025 Feb 06 1058 UTC
Duration: 1 minutes
Peak Flux: 8100 sfu
Latest Penticton Noon Flux: 191 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.

11:01 UTC

Space Weather Message Code: ALTXMF
Serial Number: 474
Issue Time: 2025 Feb 06 1101 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Feb 06 1113 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.

kolmapäev, 5 veebruar 2025

08:53 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1399
Issue Time: 2025 Feb 05 0853 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Feb 05 0751 UTC
Estimated Velocity: 390 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.

teisipäev, 4 veebruar 2025

11:23 UTC

Space Weather Message Code: ALTXMF
Serial Number: 473
Issue Time: 2025 Feb 04 1123 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Feb 04 1121 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.

esmaspäev, 3 veebruar 2025

13:27 UTC

Space Weather Message Code: SUMXM5
Serial Number: 284
Issue Time: 2025 Feb 03 1327 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2025 Feb 03 1307 UTC
Maximum Time: 2025 Feb 03 1318 UTC
End Time: 2025 Feb 03 1323 UTC
X-ray Class: M6.1
Optical Class: 2b
Location: N04E15
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.

13:18 UTC

Space Weather Message Code: ALTXMF
Serial Number: 472
Issue Time: 2025 Feb 03 1318 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Feb 03 1315 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.

06:38 UTC

Space Weather Message Code: SUM10R
Serial Number: 858
Issue Time: 2025 Feb 03 0638 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2025 Feb 03 0550 UTC
Maximum Time: 2025 Feb 03 0550 UTC
End Time: 2025 Feb 03 0550 UTC
Duration: 1 minutes
Peak Flux: 220 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.

04:12 UTC

Space Weather Message Code: SUMXM5
Serial Number: 283
Issue Time: 2025 Feb 03 0412 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2025 Feb 03 0352 UTC
Maximum Time: 2025 Feb 03 0358 UTC
End Time: 2025 Feb 03 0404 UTC
X-ray Class: M8.8
Location: N05E24
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.

03:57 UTC

Space Weather Message Code: ALTXMF
Serial Number: 471
Issue Time: 2025 Feb 03 0357 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Feb 03 0358 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.

pühapäev, 2 veebruar 2025

15:51 UTC

Space Weather Message Code: WARK05
Serial Number: 1969
Issue Time: 2025 Feb 02 1551 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Feb 02 1550 UTC
Valid To: 2025 Feb 02 2359 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.

15:46 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3418
Issue Time: 2025 Feb 02 1546 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2025 Feb 02 1530 UTC
Station: GOES16




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

14:15 UTC

Space Weather Message Code: SUMXM5
Serial Number: 282
Issue Time: 2025 Feb 02 1415 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2025 Feb 02 1358 UTC
Maximum Time: 2025 Feb 02 1404 UTC
End Time: 2025 Feb 02 1408 UTC
X-ray Class: M5.1
Location: N18E03
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.

14:05 UTC

Space Weather Message Code: ALTXMF
Serial Number: 470
Issue Time: 2025 Feb 02 1405 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Feb 02 1404 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.

10:40 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1398
Issue Time: 2025 Feb 02 1040 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Feb 02 1018 UTC
Estimated Velocity: 664 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.

06:22 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1397
Issue Time: 2025 Feb 02 0622 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Feb 02 0540 UTC
Estimated Velocity: 736 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.

05:15 UTC

Space Weather Message Code: WARK04
Serial Number: 4822
Issue Time: 2025 Feb 02 0515 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4821
Valid From: 2025 Feb 01 0023 UTC
Now Valid Until: 2025 Feb 02 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.

laupäev, 1 veebruar 2025

14:59 UTC

Space Weather Message Code: WARK04
Serial Number: 4821
Issue Time: 2025 Feb 01 1459 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4820
Valid From: 2025 Feb 01 0023 UTC
Now Valid Until: 2025 Feb 02 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.

14:59 UTC

Space Weather Message Code: WARK05
Serial Number: 1968
Issue Time: 2025 Feb 01 1459 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Feb 01 1457 UTC
Valid To: 2025 Feb 01 2359 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.

13:52 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1396
Issue Time: 2025 Feb 01 1352 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Feb 01 1328 UTC
Estimated Velocity: 264 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.

02:40 UTC

Space Weather Message Code: ALTK04
Serial Number: 2523
Issue Time: 2025 Feb 01 0240 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Feb 01 0230 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.

00:24 UTC

Space Weather Message Code: WARK04
Serial Number: 4820
Issue Time: 2025 Feb 01 0024 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Feb 01 0023 UTC
Valid To: 2025 Feb 01 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.

reede, 31 jaanuar 2025

14:30 UTC

Space Weather Message Code: SUMXM5
Serial Number: 281
Issue Time: 2025 Jan 31 1430 UTC

SUMMARY: X-ray Event exceeded M5
Begin Time: 2025 Jan 31 1340 UTC
Maximum Time: 2025 Jan 31 1406 UTC
End Time: 2025 Jan 31 1425 UTC
X-ray Class: M6.7
Location: N14E41
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.

14:20 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1395
Issue Time: 2025 Jan 31 1420 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Jan 31 1356 UTC
Estimated Velocity: 673 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.

14:18 UTC

Space Weather Message Code: SUM10R
Serial Number: 857
Issue Time: 2025 Jan 31 1418 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2025 Jan 31 1348 UTC
Maximum Time: 2025 Jan 31 1352 UTC
End Time: 2025 Jan 31 1402 UTC
Duration: 14 minutes
Peak Flux: 280 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.

13:58 UTC

Space Weather Message Code: ALTXMF
Serial Number: 469
Issue Time: 2025 Jan 31 1358 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Jan 31 1358 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.

neljapäev, 30 jaanuar 2025

17:06 UTC

Space Weather Message Code: WATA20
Serial Number: 1025
Issue Time: 2025 Jan 30 1706 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Jan 31: G1 (Minor) Feb 01: G1 (Minor) Feb 02: 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.

kolmapäev, 29 jaanuar 2025

18:54 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1394
Issue Time: 2025 Jan 29 1854 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Jan 29 1821 UTC
Estimated Velocity: 487 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.

teisipäev, 28 jaanuar 2025

20:57 UTC

Space Weather Message Code: ALTK04
Serial Number: 2522
Issue Time: 2025 Jan 28 2057 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Jan 28 2021 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.

20:51 UTC

Space Weather Message Code: WARK04
Serial Number: 4819
Issue Time: 2025 Jan 28 2051 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Jan 28 2021 UTC
Valid To: 2025 Jan 29 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.

08:47 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1393
Issue Time: 2025 Jan 28 0847 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Jan 28 0806 UTC
Estimated Velocity: 580 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.

esmaspäev, 27 jaanuar 2025

14:30 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3417
Issue Time: 2025 Jan 27 1430 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2025 Jan 27 1415 UTC
Station: GOES-16




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

reede, 24 jaanuar 2025

17:04 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1392
Issue Time: 2025 Jan 24 1704 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Jan 24 1622 UTC
Estimated Velocity: 273 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.

neljapäev, 23 jaanuar 2025

17:42 UTC

Space Weather Message Code: WARK04
Serial Number: 4818
Issue Time: 2025 Jan 23 1742 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Jan 23 1742 UTC
Valid To: 2025 Jan 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.

13:36 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3416
Issue Time: 2025 Jan 23 1336 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3415
Begin Time: 2025 Jan 22 1535 UTC
Yesterday Maximum 2MeV Flux: 1497 pfu



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