Space Weather Alerts

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K05W 2025-05-10 05:59:21.377

  • Issued: Sat, 10 May 2025 05:59:21 +0000
  • Space Weather Message Code: WARK05
    Serial Number: 2039
    Issue Time: 2025 May 10 0559 UTC
    
    EXTENDED WARNING: Geomagnetic K-index of 5 expected
    Extension to Serial Number: 2038
    Valid From: 2025 May 09 2348 UTC
    Now Valid Until: 2025 May 10 1200 UTC
    Warning Condition: Persistence
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
    Induced Currents - Weak power grid fluctuations can occur.
    Spacecraft - Minor impact on satellite operations possible.
    Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.                                

K04A 2025-05-09 19:57:19.893

  • Issued: Fri, 09 May 2025 19:57:19 +0000
  • Space Weather Message Code: ALTK04
    Serial Number: 2556
    Issue Time: 2025 May 09 1957 UTC
    
    ALERT: Geomagnetic K-index of 4
     Threshold Reached: 2025 May 09 1956 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.                                

K04W 2025-05-09 19:56:36.263

  • Issued: Fri, 09 May 2025 19:56:36 +0000
  • Space Weather Message Code: WARK04
    Serial Number: 4958
    Issue Time: 2025 May 09 1956 UTC
    
    WARNING: Geomagnetic K-index of 4 expected
    Valid From: 2025 May 09 1953 UTC
    Valid To: 2025 May 10 1200 UTC
    Warning Condition: Onset
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
    Induced Currents - Weak power grid fluctuations can occur.
    Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.                                

EF3A 2025-05-09 06:42:37.337

  • Issued: Fri, 09 May 2025 06:42:37 +0000
  • Space Weather Message Code: ALTEF3
    Serial Number: 3463
    Issue Time: 2025 May 09 0642 UTC
    
    CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
    Continuation of Serial Number: 3462
    Begin Time: 2025 May 02 1330 UTC
    Yesterday Maximum 2MeV Flux: 15854 pfu
    
    
    
    Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.                                

EF3A 2025-05-08 04:59:27.777

  • Issued: Thu, 08 May 2025 04:59:27 +0000
  • Space Weather Message Code: ALTEF3
    Serial Number: 3462
    Issue Time: 2025 May 08 0459 UTC
    
    CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
    Continuation of Serial Number: 3461
    Begin Time: 2025 May 02 1330 UTC
    Yesterday Maximum 2MeV Flux: 12994 pfu
    
    
    
    Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.                                

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