Space Weather Alerts

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K04W 2025-05-06 08:55:11.733

  • Issued: Tue, 06 May 2025 08:55:11 +0000
  • Space Weather Message Code: WARK04
    Serial Number: 4954
    Issue Time: 2025 May 06 0855 UTC
    
    EXTENDED WARNING: Geomagnetic K-index of 4 expected
    Extension to Serial Number: 4953
    Valid From: 2025 May 01 0343 UTC
    Now Valid Until: 2025 May 06 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.                                

EF3A 2025-05-06 05:00:40.680

  • Issued: Tue, 06 May 2025 05:00:40 +0000
  • Space Weather Message Code: ALTEF3
    Serial Number: 3460
    Issue Time: 2025 May 06 0500 UTC
    
    CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
    Continuation of Serial Number: 3459
    Begin Time: 2025 May 02 1330 UTC
    Yesterday Maximum 2MeV Flux: 16255 pfu
    
    
    
    Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.                                

K05W 2025-05-05 23:48:27.957

  • Issued: Mon, 05 May 2025 23:48:27 +0000
  • Space Weather Message Code: WARK05
    Serial Number: 2037
    Issue Time: 2025 May 05 2348 UTC
    
    EXTENDED WARNING: Geomagnetic K-index of 5 expected
    Extension to Serial Number: 2036
    Valid From: 2025 May 04 2010 UTC
    Now Valid Until: 2025 May 06 0900 UTC
    Warning Condition: Persistence
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
    Induced Currents - Weak power grid fluctuations can occur.
    Spacecraft - Minor impact on satellite operations possible.
    Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.                                

A20F 2025-05-05 18:06:18.023

  • Issued: Mon, 05 May 2025 18:06:18 +0000
  • Space Weather Message Code: WATA20
    Serial Number: 1038
    Issue Time: 2025 May 05 1806 UTC
    
    WATCH: Geomagnetic Storm Category G1 Predicted
    
    Highest Storm Level Predicted by Day:
    May 06:  G1 (Minor)   May 07:  None (Below G1)   May 08:  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.                                

K05A 2025-05-05 18:03:34.600

  • Issued: Mon, 05 May 2025 18:03:34 +0000
  • Space Weather Message Code: ALTK05
    Serial Number: 1768
    Issue Time: 2025 May 05 1803 UTC
    
    ALERT: Geomagnetic K-index of 5
     Threshold Reached: 2025 May 05 1759 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.                                

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