Space Weather Alerts

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K04W 2025-06-12 11:36:10.433

  • Issued: Thu, 12 Jun 2025 11:36:10 +0000
  • Space Weather Message Code: WARK04
    Serial Number: 4997
    Issue Time: 2025 Jun 12 1136 UTC
    
    EXTENDED WARNING: Geomagnetic K-index of 4 expected
    Extension to Serial Number: 4996
    Valid From: 2025 Jun 11 1710 UTC
    Now Valid Until: 2025 Jun 12 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.                                

K05W 2025-06-12 05:09:18.000

  • Issued: Thu, 12 Jun 2025 05:09:18 +0000
  • Space Weather Message Code: WARK05
    Serial Number: 2063
    Issue Time: 2025 Jun 12 0509 UTC
    
    EXTENDED WARNING: Geomagnetic K-index of 5 expected
    Extension to Serial Number: 2062
    Valid From: 2025 Jun 11 2255 UTC
    Now Valid Until: 2025 Jun 12 1200 UTC
    Warning Condition: Persistence
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Area of impact primarily poleward of 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 2025-06-12 03:01:24.420

  • Issued: Thu, 12 Jun 2025 03:01:24 +0000
  • Space Weather Message Code: ALTK05
    Serial Number: 1808
    Issue Time: 2025 Jun 12 0301 UTC
    
    ALERT: Geomagnetic K-index of 5
     Threshold Reached: 2025 Jun 12 0243 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.                                

K05A 2025-06-11 23:46:14.187

  • Issued: Wed, 11 Jun 2025 23:46:14 +0000
  • Space Weather Message Code: ALTK05
    Serial Number: 1807
    Issue Time: 2025 Jun 11 2346 UTC
    
    ALERT: Geomagnetic K-index of 5
     Threshold Reached: 2025 Jun 11 2341 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.                                

K04W 2025-06-11 22:59:58.947

  • Issued: Wed, 11 Jun 2025 22:59:58 +0000
  • Space Weather Message Code: WARK04
    Serial Number: 4996
    Issue Time: 2025 Jun 11 2259 UTC
    
    EXTENDED WARNING: Geomagnetic K-index of 4 expected
    Extension to Serial Number: 4995
    Valid From: 2025 Jun 11 1710 UTC
    Now Valid Until: 2025 Jun 12 1200 UTC
    Warning Condition: Persistence
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
    Induced Currents - Weak power grid fluctuations can occur.
    Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.                                

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