Сповіщення і попередження NOAA SWPC

Національний центр прогнозування метеорологічної погоди (NOAA SWPC) є офіційним агентством космічної погоди США, яке оперативно здійснює оповіщення про її зміни. Нижче ви знайдете останні повідомлення про погоду в космосі, прогнози, часові інтервали і попередження, від NOAA SWPC.

неділя, 30 березня 2025

05:01 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3441
Issue Time: 2025 Mar 30 0501 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3440
Begin Time: 2025 Mar 28 1410 UTC
Yesterday Maximum 2MeV Flux: 2968 pfu



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

субота, 29 березня 2025

05:07 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3440
Issue Time: 2025 Mar 29 0507 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3439
Begin Time: 2025 Mar 28 1410 UTC
Yesterday Maximum 2MeV Flux: 2819 pfu



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

пʼятниця, 28 березня 2025

23:57 UTC

Space Weather Message Code: WARK04
Serial Number: 4894
Issue Time: 2025 Mar 28 2357 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4893
Valid From: 2025 Mar 25 2017 UTC
Now Valid Until: 2025 Mar 29 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.

16:09 UTC

Space Weather Message Code: SUMX01
Serial Number: 191
Issue Time: 2025 Mar 28 1609 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2025 Mar 28 1503 UTC
Maximum Time: 2025 Mar 28 1521 UTC
End Time: 2025 Mar 28 1542 UTC
X-ray Class: X1.1
Location: N06E75
NOAA Scale: R3 - Strong

Comment: This summary is resent to correct the X-ray Class of this event to an X1.1 vs an X1.4.

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.

15:50 UTC

Space Weather Message Code: SUMX01
Serial Number: 190
Issue Time: 2025 Mar 28 1550 UTC

SUMMARY: X-ray Event exceeded X1
Begin Time: 2025 Mar 28 1503 UTC
Maximum Time: 2025 Mar 28 1521 UTC
End Time: 2025 Mar 28 1542 UTC
X-ray Class: X1.4
Location: N06E75
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.

15:42 UTC

Space Weather Message Code: SUM10R
Serial Number: 862
Issue Time: 2025 Mar 28 1542 UTC

SUMMARY: 10cm Radio Burst
Begin Time: 2025 Feb 28 1506 UTC
Maximum Time: 2025 Feb 28 1514 UTC
End Time: 2025 Feb 28 1530 UTC
Duration: 24 minutes
Peak Flux: 380 sfu
Latest Penticton Noon Flux: 153 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.

15:37 UTC

Space Weather Message Code: ALTTP4
Serial Number: 679
Issue Time: 2025 Mar 28 1537 UTC

ALERT: Type IV Radio Emission
Begin Time: 2025 Mar 28 1514 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.

15:18 UTC

Space Weather Message Code: ALTXMF
Serial Number: 477
Issue Time: 2025 Mar 28 1518 UTC

ALERT: X-Ray Flux exceeded M5
Threshold Reached: 2025 Mar 28 1507 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.

14:28 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3439
Issue Time: 2025 Mar 28 1428 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2025 Mar 28 1410 UTC
Station: GOES16




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

08:23 UTC

Space Weather Message Code: WARK04
Serial Number: 4893
Issue Time: 2025 Mar 28 0823 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4892
Valid From: 2025 Mar 25 2017 UTC
Now Valid Until: 2025 Mar 28 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.

четвер, 27 березня 2025

16:53 UTC

Space Weather Message Code: WARK04
Serial Number: 4892
Issue Time: 2025 Mar 27 1653 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4891
Valid From: 2025 Mar 25 2017 UTC
Now Valid Until: 2025 Mar 28 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.

16:47 UTC

Space Weather Message Code: WARK05
Serial Number: 2004
Issue Time: 2025 Mar 27 1647 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2003
Valid From: 2025 Mar 26 0131 UTC
Now Valid Until: 2025 Mar 28 0600 UTC
Warning Condition: Persistence

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

16:08 UTC

Space Weather Message Code: ALTK05
Serial Number: 1733
Issue Time: 2025 Mar 27 1608 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 27 1605 UTC
Synoptic Period: 1500-1800 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

15:03 UTC

Space Weather Message Code: ALTK05
Serial Number: 1732
Issue Time: 2025 Mar 27 1503 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 27 1459 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

09:02 UTC

Space Weather Message Code: ALTK05
Serial Number: 1731
Issue Time: 2025 Mar 27 0902 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 27 0859 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.

05:57 UTC

Space Weather Message Code: ALTK05
Serial Number: 1730
Issue Time: 2025 Mar 27 0557 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 27 0551 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.

04:52 UTC

Space Weather Message Code: WARK05
Serial Number: 2003
Issue Time: 2025 Mar 27 0452 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2002
Valid From: 2025 Mar 26 0131 UTC
Now Valid Until: 2025 Mar 27 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.

03:50 UTC

Space Weather Message Code: WARK04
Serial Number: 4891
Issue Time: 2025 Mar 27 0350 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4890
Valid From: 2025 Mar 25 2017 UTC
Now Valid Until: 2025 Mar 27 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.

середа, 26 березня 2025

22:46 UTC

Space Weather Message Code: ALTK05
Serial Number: 1729
Issue Time: 2025 Mar 26 2246 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 26 2237 UTC
Synoptic Period: 2100-2400 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

20:18 UTC

Space Weather Message Code: WARK06
Serial Number: 569
Issue Time: 2025 Mar 26 2018 UTC

EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 568
Valid From: 2025 Mar 26 1338 UTC
Now Valid Until: 2025 Mar 27 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 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.

20:16 UTC

Space Weather Message Code: ALTK06
Serial Number: 622
Issue Time: 2025 Mar 26 2016 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Mar 26 2008 UTC
Synoptic Period: 1800-2100 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate

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

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

20:04 UTC

Space Weather Message Code: ALTK05
Serial Number: 1728
Issue Time: 2025 Mar 26 2004 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 26 2000 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.

17:48 UTC

Space Weather Message Code: ALTK06
Serial Number: 621
Issue Time: 2025 Mar 26 1748 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Mar 26 1700 UTC
Synoptic Period: 1500-1800 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate

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

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

17:01 UTC

Space Weather Message Code: WARK05
Serial Number: 2002
Issue Time: 2025 Mar 26 1701 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2001
Valid From: 2025 Mar 26 0131 UTC
Now Valid Until: 2025 Mar 27 0600 UTC
Warning Condition: Persistence

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

16:59 UTC

Space Weather Message Code: WARK04
Serial Number: 4890
Issue Time: 2025 Mar 26 1659 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4889
Valid From: 2025 Mar 25 2017 UTC
Now Valid Until: 2025 Mar 27 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.

16:58 UTC

Space Weather Message Code: ALTK05
Serial Number: 1727
Issue Time: 2025 Mar 26 1658 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 26 1628 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.

14:04 UTC

Space Weather Message Code: ALTK06
Serial Number: 620
Issue Time: 2025 Mar 26 1404 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Mar 26 1358 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate

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

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

13:38 UTC

Space Weather Message Code: WARK06
Serial Number: 568
Issue Time: 2025 Mar 26 1338 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025 Mar 26 1338 UTC
Valid To: 2025 Mar 26 2100 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.

11:17 UTC

Space Weather Message Code: WARK04
Serial Number: 4889
Issue Time: 2025 Mar 26 1117 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4888
Valid From: 2025 Mar 25 2017 UTC
Now Valid Until: 2025 Mar 26 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.

11:17 UTC

Space Weather Message Code: WARK05
Serial Number: 2001
Issue Time: 2025 Mar 26 1117 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 2000
Valid From: 2025 Mar 26 0131 UTC
Now Valid Until: 2025 Mar 26 2100 UTC
Warning Condition: Persistence

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

11:12 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1409
Issue Time: 2025 Mar 26 1112 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Mar 26 0920 UTC
Estimated Velocity: 571 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: ALTK05
Serial Number: 1726
Issue Time: 2025 Mar 26 0301 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 26 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.

01:32 UTC

Space Weather Message Code: WARK05
Serial Number: 2000
Issue Time: 2025 Mar 26 0132 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Mar 26 0131 UTC
Valid To: 2025 Mar 26 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.

вівторок, 25 березня 2025

21:12 UTC

Space Weather Message Code: WATA30
Serial Number: 248
Issue Time: 2025 Mar 25 2112 UTC

WATCH: Geomagnetic Storm Category G2 Predicted

Highest Storm Level Predicted by Day:
Mar 26: G2 (Moderate) Mar 27: G1 (Minor) Mar 28: None (Below G1)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

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

Potential Impacts: Area of impact primarily poleward of 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.

20:32 UTC

Space Weather Message Code: ALTK04
Serial Number: 2539
Issue Time: 2025 Mar 25 2032 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Mar 25 2019 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.

20:18 UTC

Space Weather Message Code: WARK04
Serial Number: 4888
Issue Time: 2025 Mar 25 2018 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Mar 25 2017 UTC
Valid To: 2025 Mar 26 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.

12:50 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1408
Issue Time: 2025 Mar 25 1250 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Mar 25 1236 UTC
Estimated Velocity: 516 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.

03:20 UTC

Space Weather Message Code: WARK04
Serial Number: 4887
Issue Time: 2025 Mar 25 0320 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Mar 25 0330 UTC
Valid To: 2025 Mar 25 1530 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.

понеділок, 24 березня 2025

11:07 UTC

Space Weather Message Code: WATA30
Serial Number: 247
Issue Time: 2025 Mar 24 1107 UTC

WATCH: Geomagnetic Storm Category G2 Predicted

Highest Storm Level Predicted by Day:
Mar 24: G1 (Minor) Mar 25: G2 (Moderate) Mar 26: 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 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.

04:11 UTC

Space Weather Message Code: WARK05
Serial Number: 1999
Issue Time: 2025 Mar 24 0411 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Mar 24 0410 UTC
Valid To: 2025 Mar 24 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.

02:35 UTC

Space Weather Message Code: ALTK04
Serial Number: 2538
Issue Time: 2025 Mar 24 0235 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Mar 24 0233 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.

01:29 UTC

Space Weather Message Code: WARK04
Serial Number: 4886
Issue Time: 2025 Mar 24 0129 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Mar 24 0129 UTC
Valid To: 2025 Mar 24 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.

00:57 UTC

Space Weather Message Code: SUMSUD
Serial Number: 285
Issue Time: 2025 Mar 24 0057 UTC

SUMMARY: Geomagnetic Sudden Impulse
Observed: 2025 Mar 24 0038 UTC
Deviation: 15 nT
Station: NGK

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

00:28 UTC

Space Weather Message Code: WARSUD
Serial Number: 241
Issue Time: 2025 Mar 24 0028 UTC

WARNING: Geomagnetic Sudden Impulse expected
Valid From: 2025 Mar 24 0030 UTC
Valid To: 2025 Mar 24 0130 UTC
IP Shock Passage Observed: 2025 Mar 24 0017 UTC

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

субота, 22 березня 2025

23:37 UTC

Space Weather Message Code: ALTK05
Serial Number: 1725
Issue Time: 2025 Mar 22 2337 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 22 2337 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.

23:05 UTC

Space Weather Message Code: WARK05
Serial Number: 1998
Issue Time: 2025 Mar 22 2305 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1997
Valid From: 2025 Mar 22 1648 UTC
Now Valid Until: 2025 Mar 23 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.

23:05 UTC

Space Weather Message Code: WARK04
Serial Number: 4885
Issue Time: 2025 Mar 22 2305 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4884
Valid From: 2025 Mar 21 1715 UTC
Now Valid Until: 2025 Mar 23 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.

16:49 UTC

Space Weather Message Code: WARK04
Serial Number: 4884
Issue Time: 2025 Mar 22 1649 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4883
Valid From: 2025 Mar 21 1715 UTC
Now Valid Until: 2025 Mar 22 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.

16:48 UTC

Space Weather Message Code: WARK05
Serial Number: 1997
Issue Time: 2025 Mar 22 1648 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Mar 22 1648 UTC
Valid To: 2025 Mar 22 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.

11:21 UTC

Space Weather Message Code: WARK04
Serial Number: 4883
Issue Time: 2025 Mar 22 1121 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4882
Valid From: 2025 Mar 21 1715 UTC
Now Valid Until: 2025 Mar 22 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.

06:03 UTC

Space Weather Message Code: WARK04
Serial Number: 4882
Issue Time: 2025 Mar 22 0603 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4881
Valid From: 2025 Mar 21 1715 UTC
Now Valid Until: 2025 Mar 22 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.

03:37 UTC

Space Weather Message Code: ALTK05
Serial Number: 1724
Issue Time: 2025 Mar 22 0337 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 22 0335 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.

03:13 UTC

Space Weather Message Code: WATA50
Serial Number: 85
Issue Time: 2025 Mar 22 0313 UTC

WATCH: Geomagnetic Storm Category G3 Predicted

Highest Storm Level Predicted by Day:
Mar 23: G3 (Strong) Mar 24: G1 (Minor) Mar 25: G2 (Moderate)

THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT

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

Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
Radio - HF (high frequency) radio may be intermittent.
Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.

03:02 UTC

Space Weather Message Code: ALTK06
Serial Number: 619
Issue Time: 2025 Mar 22 0302 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Mar 22 0259 UTC
Synoptic Period: 0000-0300 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate

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

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

01:40 UTC

Space Weather Message Code: ALTK05
Serial Number: 1723
Issue Time: 2025 Mar 22 0139 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 22 0136 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.

пʼятниця, 21 березня 2025

23:35 UTC

Space Weather Message Code: ALTK05
Serial Number: 1722
Issue Time: 2025 Mar 21 2335 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 21 2330 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.

19:43 UTC

Space Weather Message Code: WARK06
Serial Number: 567
Issue Time: 2025 Mar 21 1943 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025 Mar 21 1945 UTC
Valid To: 2025 Mar 22 0600 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.

18:55 UTC

Space Weather Message Code: ALTK05
Serial Number: 1721
Issue Time: 2025 Mar 21 1855 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 21 1855 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: 1996
Issue Time: 2025 Mar 21 1733 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Mar 21 1732 UTC
Valid To: 2025 Mar 22 0900 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

17:31 UTC

Space Weather Message Code: ALTK04
Serial Number: 2537
Issue Time: 2025 Mar 21 1731 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Mar 21 1730 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.

17:12 UTC

Space Weather Message Code: WARK04
Serial Number: 4881
Issue Time: 2025 Mar 21 1712 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Mar 21 1715 UTC
Valid To: 2025 Mar 22 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.

16:12 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1407
Issue Time: 2025 Mar 21 1612 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Mar 21 1557 UTC
Estimated Velocity: 242 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.

середа, 19 березня 2025

21:03 UTC

Space Weather Message Code: ALTK05
Serial Number: 1720
Issue Time: 2025 Mar 19 2103 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 19 2059 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.

20:52 UTC

Space Weather Message Code: WARK04
Serial Number: 4880
Issue Time: 2025 Mar 19 2052 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4879
Valid From: 2025 Mar 17 0345 UTC
Now Valid Until: 2025 Mar 20 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.

20:39 UTC

Space Weather Message Code: WARK05
Serial Number: 1995
Issue Time: 2025 Mar 19 2039 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Mar 19 2039 UTC
Valid To: 2025 Mar 20 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.

07:50 UTC

Space Weather Message Code: WARK05
Serial Number: 1994
Issue Time: 2025 Mar 19 0750 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Mar 19 0749 UTC
Valid To: 2025 Mar 19 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.

05:15 UTC

Space Weather Message Code: WARK04
Serial Number: 4879
Issue Time: 2025 Mar 19 0515 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4878
Valid From: 2025 Mar 17 0345 UTC
Now Valid Until: 2025 Mar 19 2359 UTC
Warning Condition: Persistence

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

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

вівторок, 18 березня 2025

23:52 UTC

Space Weather Message Code: WARK04
Serial Number: 4878
Issue Time: 2025 Mar 18 2352 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4877
Valid From: 2025 Mar 17 0345 UTC
Now Valid Until: 2025 Mar 19 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.

07:34 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3438
Issue Time: 2025 Mar 18 0734 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3437
Begin Time: 2025 Mar 10 1150 UTC
Yesterday Maximum 2MeV Flux: 6680 pfu



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

05:56 UTC

Space Weather Message Code: WARK04
Serial Number: 4877
Issue Time: 2025 Mar 18 0556 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4876
Valid From: 2025 Mar 17 0345 UTC
Now Valid Until: 2025 Mar 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.

понеділок, 17 березня 2025

21:02 UTC

Space Weather Message Code: ALTK04
Serial Number: 2536
Issue Time: 2025 Mar 17 2102 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Mar 17 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.

20:54 UTC

Space Weather Message Code: WARK04
Serial Number: 4876
Issue Time: 2025 Mar 17 2054 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4875
Valid From: 2025 Mar 17 0345 UTC
Now Valid Until: 2025 Mar 18 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.

14:48 UTC

Space Weather Message Code: WARK04
Serial Number: 4875
Issue Time: 2025 Mar 17 1448 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4874
Valid From: 2025 Mar 17 0345 UTC
Now Valid Until: 2025 Mar 17 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.

05:21 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3437
Issue Time: 2025 Mar 17 0521 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3436
Begin Time: 2025 Mar 10 1150 UTC
Yesterday Maximum 2MeV Flux: 5055 pfu



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

03:48 UTC

Space Weather Message Code: WARK04
Serial Number: 4874
Issue Time: 2025 Mar 17 0348 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Mar 17 0345 UTC
Valid To: 2025 Mar 17 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.

неділя, 16 березня 2025

14:48 UTC

Space Weather Message Code: WARK04
Serial Number: 4873
Issue Time: 2025 Mar 16 1448 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Mar 16 1447 UTC
Valid To: 2025 Mar 17 0300 UTC
Warning Condition: Onset

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

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

07:37 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3436
Issue Time: 2025 Mar 16 0737 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3435
Begin Time: 2025 Mar 10 1150 UTC
Yesterday Maximum 2MeV Flux: 4951 pfu



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

субота, 15 березня 2025

05:00 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3435
Issue Time: 2025 Mar 15 0500 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3434
Begin Time: 2025 Mar 10 1150 UTC
Yesterday Maximum 2MeV Flux: 3982 pfu



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

01:55 UTC

Space Weather Message Code: WARK04
Serial Number: 4872
Issue Time: 2025 Mar 15 0155 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4871
Valid From: 2025 Mar 12 0735 UTC
Now Valid Until: 2025 Mar 15 2359 UTC
Warning Condition: Persistence

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

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

01:42 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3434
Issue Time: 2025 Mar 15 0142 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3433
Begin Time: 2025 Mar 10 1150 UTC
Yesterday Maximum 2MeV Flux: 3982 pfu



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

пʼятниця, 14 березня 2025

17:34 UTC

Space Weather Message Code: WARK04
Serial Number: 4871
Issue Time: 2025 Mar 14 1734 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4870
Valid From: 2025 Mar 12 0735 UTC
Now Valid Until: 2025 Mar 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.

10:45 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3433
Issue Time: 2025 Mar 14 1045 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3432
Begin Time: 2025 Mar 10 1150 UTC
Yesterday Maximum 2MeV Flux: 1561 pfu



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

01:41 UTC

Space Weather Message Code: ALTK06
Serial Number: 618
Issue Time: 2025 Mar 14 0141 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Mar 14 0142 UTC
Synoptic Period: 0000-0300 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate

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

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

01:40 UTC

Space Weather Message Code: WARK06
Serial Number: 566
Issue Time: 2025 Mar 14 0140 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025 Mar 14 0140 UTC
Valid To: 2025 Mar 14 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.

01:30 UTC

Space Weather Message Code: WARK05
Serial Number: 1993
Issue Time: 2025 Mar 14 0130 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1992
Valid From: 2025 Mar 13 1930 UTC
Now Valid Until: 2025 Mar 14 1500 UTC
Warning Condition: Persistence

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

01:29 UTC

Space Weather Message Code: WARK04
Serial Number: 4870
Issue Time: 2025 Mar 14 0129 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4869
Valid From: 2025 Mar 12 0735 UTC
Now Valid Until: 2025 Mar 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.

01:27 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3432
Issue Time: 2025 Mar 14 0127 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3431
Begin Time: 2025 Mar 10 1150 UTC
Yesterday Maximum 2MeV Flux: 1561 pfu



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

01:25 UTC

Space Weather Message Code: ALTK05
Serial Number: 1719
Issue Time: 2025 Mar 14 0125 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 14 0120 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.

четвер, 13 березня 2025

19:50 UTC

Space Weather Message Code: ALTK05
Serial Number: 1718
Issue Time: 2025 Mar 13 1950 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 13 1944 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.

19:34 UTC

Space Weather Message Code: WARK05
Serial Number: 1992
Issue Time: 2025 Mar 13 1934 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Mar 13 1930 UTC
Valid To: 2025 Mar 14 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.

19:00 UTC

Space Weather Message Code: WARK04
Serial Number: 4869
Issue Time: 2025 Mar 13 1900 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4868
Valid From: 2025 Mar 12 0735 UTC
Now Valid Until: 2025 Mar 14 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.

14:18 UTC

Space Weather Message Code: WARK04
Serial Number: 4868
Issue Time: 2025 Mar 13 1418 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4867
Valid From: 2025 Mar 12 0735 UTC
Now Valid Until: 2025 Mar 13 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.

14:18 UTC

Space Weather Message Code: WARK05
Serial Number: 1991
Issue Time: 2025 Mar 13 1418 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1990
Valid From: 2025 Mar 12 1050 UTC
Now Valid Until: 2025 Mar 13 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.

13:24 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3431
Issue Time: 2025 Mar 13 1324 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3430
Begin Time: 2025 Mar 10 1150 UTC
Yesterday Maximum 2MeV Flux: 1994 pfu



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

12:48 UTC

Space Weather Message Code: ALTK05
Serial Number: 1717
Issue Time: 2025 Mar 13 1248 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 13 1248 UTC
Synoptic Period: 1200-1500 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

12:01 UTC

Space Weather Message Code: ALTK05
Serial Number: 1716
Issue Time: 2025 Mar 13 1201 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 13 1159 UTC
Synoptic Period: 0900-1200 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

08:40 UTC

Space Weather Message Code: ALTK05
Serial Number: 1715
Issue Time: 2025 Mar 13 0840 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 13 0839 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.

05:55 UTC

Space Weather Message Code: WARK05
Serial Number: 1990
Issue Time: 2025 Mar 13 0555 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1989
Valid From: 2025 Mar 12 1050 UTC
Now Valid Until: 2025 Mar 13 1500 UTC
Warning Condition: Persistence

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

05:55 UTC

Space Weather Message Code: WARK04
Serial Number: 4867
Issue Time: 2025 Mar 13 0555 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4866
Valid From: 2025 Mar 12 0735 UTC
Now Valid Until: 2025 Mar 13 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.

04:35 UTC

Space Weather Message Code: ALTK05
Serial Number: 1714
Issue Time: 2025 Mar 13 0435 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 13 0435 UTC
Synoptic Period: 0300-0600 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

01:32 UTC

Space Weather Message Code: ALTK05
Serial Number: 1713
Issue Time: 2025 Mar 13 0132 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 13 0131 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.

середа, 12 березня 2025

23:53 UTC

Space Weather Message Code: ALTK05
Serial Number: 1712
Issue Time: 2025 Mar 12 2353 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 12 2353 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.

23:02 UTC

Space Weather Message Code: WARK05
Serial Number: 1989
Issue Time: 2025 Mar 12 2302 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1988
Valid From: 2025 Mar 12 1050 UTC
Now Valid Until: 2025 Mar 13 0600 UTC
Warning Condition: Persistence

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

20:55 UTC

Space Weather Message Code: ALTK05
Serial Number: 1711
Issue Time: 2025 Mar 12 2055 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 12 2051 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.

17:52 UTC

Space Weather Message Code: WARK04
Serial Number: 4866
Issue Time: 2025 Mar 12 1752 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4865
Valid From: 2025 Mar 12 0735 UTC
Now Valid Until: 2025 Mar 13 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.

17:51 UTC

Space Weather Message Code: WARK05
Serial Number: 1988
Issue Time: 2025 Mar 12 1751 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1987
Valid From: 2025 Mar 12 1050 UTC
Now Valid Until: 2025 Mar 13 0000 UTC
Warning Condition: Persistence

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

Potential Impacts: Area of impact primarily poleward of 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.

17:49 UTC

Space Weather Message Code: ALTK05
Serial Number: 1710
Issue Time: 2025 Mar 12 1749 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 12 1742 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.

11:16 UTC

Space Weather Message Code: ALTK04
Serial Number: 2535
Issue Time: 2025 Mar 12 1116 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Mar 12 1030 UTC
Synoptic Period: 0900-1200 UTC

Active Warning: Yes

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

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

10:50 UTC

Space Weather Message Code: WARK05
Serial Number: 1987
Issue Time: 2025 Mar 12 1050 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Mar 12 1050 UTC
Valid To: 2025 Mar 12 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.

07:47 UTC

Space Weather Message Code: ALTTP2
Serial Number: 1406
Issue Time: 2025 Mar 12 0747 UTC

ALERT: Type II Radio Emission
Begin Time: 2025 Mar 12 0503 UTC
Estimated Velocity: 403 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.

07:35 UTC

Space Weather Message Code: WARK04
Serial Number: 4865
Issue Time: 2025 Mar 12 0735 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Mar 12 0735 UTC
Valid To: 2025 Mar 12 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.

07:01 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3430
Issue Time: 2025 Mar 12 0701 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3429
Begin Time: 2025 Mar 10 1150 UTC
Yesterday Maximum 2MeV Flux: 4110 pfu



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

02:37 UTC

Space Weather Message Code: ALTK04
Serial Number: 2534
Issue Time: 2025 Mar 12 0237 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Mar 12 0236 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.

00:07 UTC

Space Weather Message Code: WARK04
Serial Number: 4864
Issue Time: 2025 Mar 12 0007 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Mar 12 0006 UTC
Valid To: 2025 Mar 12 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.

вівторок, 11 березня 2025

09:22 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3429
Issue Time: 2025 Mar 11 0922 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3428
Begin Time: 2025 Mar 10 1150 UTC
Yesterday Maximum 2MeV Flux: 2397 pfu



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

понеділок, 10 березня 2025

12:07 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3428
Issue Time: 2025 Mar 10 1207 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2025 Mar 10 1150 UTC
Station: GOES16




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

неділя, 9 березня 2025

23:20 UTC

Space Weather Message Code: WARK06
Serial Number: 565
Issue Time: 2025 Mar 09 2320 UTC

CANCEL WARNING: Geomagnetic K-Index of 6 expected
Cancel Serial Number: 564
Original Issue Time: 2025 Mar 09 0423 UTC

Comment: The previous extention was an error. The conditions for this level of geomagnetic activity no longer exist.

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.

23:19 UTC

Space Weather Message Code: WARK04
Serial Number: 4863
Issue Time: 2025 Mar 09 2319 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4862
Valid From: 2025 Mar 08 1500 UTC
Now Valid Until: 2025 Mar 10 0600 UTC
Warning Condition: Persisence

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.

23:18 UTC

Space Weather Message Code: WARK06
Serial Number: 564
Issue Time: 2025 Mar 09 2318 UTC

EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 563
Valid From: 2025 Mar 09 0422 UTC
Now Valid Until: 2025 Mar 10 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 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.

10:40 UTC

Space Weather Message Code: WARK06
Serial Number: 563
Issue Time: 2025 Mar 09 1040 UTC

EXTENDED WARNING: Geomagnetic K-Index of 6 expected
Extension to Serial Number: 562
Valid From: 2025 Mar 09 0422 UTC
Now Valid Until: 2025 Mar 09 1800 UTC
Warning Condition: Persistence

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

Potential Impacts: Area of impact primarily poleward of 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.

10:40 UTC

Space Weather Message Code: ALTK06
Serial Number: 617
Issue Time: 2025 Mar 09 1040 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Mar 09 1040 UTC
Synoptic Period: 0900-1200 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate

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

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

09:32 UTC

Space Weather Message Code: ALTK05
Serial Number: 1709
Issue Time: 2025 Mar 09 0932 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 09 0931 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.

05:59 UTC

Space Weather Message Code: ALTK06
Serial Number: 616
Issue Time: 2025 Mar 09 0559 UTC

ALERT: Geomagnetic K-index of 6
Threshold Reached: 2025 Mar 09 0559 UTC
Synoptic Period: 0300-0600 UTC

Active Warning: Yes
NOAA Scale: G2 - Moderate

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

Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
Radio - HF (high frequency) radio propagation can fade at higher latitudes.
Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.

04:23 UTC

Space Weather Message Code: WARK06
Serial Number: 562
Issue Time: 2025 Mar 09 0423 UTC

WARNING: Geomagnetic K-Index of 6 expected
Valid From: 2025 Mar 09 0422 UTC
Valid To: 2025 Mar 09 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.

04:23 UTC

Space Weather Message Code: WARK05
Serial Number: 1986
Issue Time: 2025 Mar 09 0423 UTC

EXTENDED WARNING: Geomagnetic K-index of 5 expected
Extension to Serial Number: 1985
Valid From: 2025 Mar 08 2019 UTC
Now Valid Until: 2025 Mar 09 1800 UTC
Warning Condition: Persistence

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

Potential Impacts: Area of impact primarily poleward of 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.

04:23 UTC

Space Weather Message Code: WARK04
Serial Number: 4862
Issue Time: 2025 Mar 09 0423 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4861
Valid From: 2025 Mar 08 1500 UTC
Now Valid Until: 2025 Mar 09 2359 UTC
Warning Condition: Persisence

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.

04:06 UTC

Space Weather Message Code: ALTK05
Serial Number: 1708
Issue Time: 2025 Mar 09 0406 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 09 0405 UTC
Synoptic Period: 0300-0600 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

02:57 UTC

Space Weather Message Code: ALTK05
Serial Number: 1707
Issue Time: 2025 Mar 09 0257 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 09 0255 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.

субота, 8 березня 2025

23:15 UTC

Space Weather Message Code: ALTK05
Serial Number: 1706
Issue Time: 2025 Mar 08 2315 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 08 2310 UTC
Synoptic Period: 2100-2400 UTC

Active Warning: Yes
NOAA Scale: G1 - Minor

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

21:03 UTC

Space Weather Message Code: ALTK05
Serial Number: 1705
Issue Time: 2025 Mar 08 2103 UTC

ALERT: Geomagnetic K-index of 5
Threshold Reached: 2025 Mar 08 2059 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.

20:20 UTC

Space Weather Message Code: WARK05
Serial Number: 1985
Issue Time: 2025 Mar 08 2020 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Mar 08 2019 UTC
Valid To: 2025 Mar 09 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.

14:56 UTC

Space Weather Message Code: WARK04
Serial Number: 4861
Issue Time: 2025 Mar 08 1456 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Mar 08 1500 UTC
Valid To: 2025 Mar 09 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.

09:01 UTC

Space Weather Message Code: ALTK04
Serial Number: 2533
Issue Time: 2025 Mar 08 0901 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Mar 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.

06:58 UTC

Space Weather Message Code: WARK04
Serial Number: 4860
Issue Time: 2025 Mar 08 0658 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Mar 08 0700 UTC
Valid To: 2025 Mar 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.

пʼятниця, 7 березня 2025

19:12 UTC

Space Weather Message Code: WATA20
Serial Number: 1033
Issue Time: 2025 Mar 07 1912 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

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

02:56 UTC

Space Weather Message Code: WATA20
Serial Number: 1032
Issue Time: 2025 Mar 07 0256 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Mar 07: None (Below G1) Mar 08: None (Below G1) Mar 09: 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.

середа, 5 березня 2025

11:54 UTC

Space Weather Message Code: WARK04
Serial Number: 4859
Issue Time: 2025 Mar 05 1154 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4858
Valid From: 2025 Mar 04 2132 UTC
Now Valid Until: 2025 Mar 05 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.

вівторок, 4 березня 2025

21:39 UTC

Space Weather Message Code: WARK05
Serial Number: 1984
Issue Time: 2025 Mar 04 2139 UTC

WARNING: Geomagnetic K-index of 5 expected
Valid From: 2025 Mar 04 2139 UTC
Valid To: 2025 Mar 05 0600 UTC
Warning Condition: Onset
NOAA Scale: G1 - Minor

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

Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Spacecraft - Minor impact on satellite operations possible.
Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.

21:36 UTC

Space Weather Message Code: ALTK04
Serial Number: 2532
Issue Time: 2025 Mar 04 2136 UTC

ALERT: Geomagnetic K-index of 4
Threshold Reached: 2025 Mar 04 2127 UTC
Synoptic Period: 2100-2400 UTC

Active Warning: Yes

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

Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
Induced Currents - Weak power grid fluctuations can occur.
Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.

21:33 UTC

Space Weather Message Code: WARK04
Serial Number: 4858
Issue Time: 2025 Mar 04 2133 UTC

WARNING: Geomagnetic K-index of 4 expected
Valid From: 2025 Mar 04 2132 UTC
Valid To: 2025 Mar 05 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.

18:44 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3427
Issue Time: 2025 Mar 04 1844 UTC

CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Continuation of Serial Number: 3426
Begin Time: 2025 Mar 02 1510 UTC
Yesterday Maximum 2MeV Flux: 1134 pfu



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

неділя, 2 березня 2025

15:48 UTC

Space Weather Message Code: ALTEF3
Serial Number: 3426
Issue Time: 2025 Mar 02 1548 UTC

ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
Threshold Reached: 2025 Mar 02 1510 UTC
Station: GOES-16




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

05:22 UTC

Space Weather Message Code: WATA20
Serial Number: 1031
Issue Time: 2025 Mar 02 0522 UTC

WATCH: Geomagnetic Storm Category G1 Predicted

Highest Storm Level Predicted by Day:
Mar 03: None (Below G1) Mar 04: G1 (Minor) Mar 05: 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.

субота, 1 березня 2025

21:11 UTC

Space Weather Message Code: WARK04
Serial Number: 4857
Issue Time: 2025 Mar 01 2111 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4856
Valid From: 2025 Feb 27 0101 UTC
Now Valid Until: 2025 Mar 02 1200 UTC
Warning Condition: Persistence

Comment: Correction for valid time date from 01 Mar to 02 Mar.

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.

20:55 UTC

Space Weather Message Code: WARK04
Serial Number: 4856
Issue Time: 2025 Mar 01 2055 UTC

EXTENDED WARNING: Geomagnetic K-index of 4 expected
Extension to Serial Number: 4855
Valid From: 2025 Feb 27 0101 UTC
Now Valid Until: 2025 Mar 01 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.