Space Weather Alerts

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TIIA 2025-02-20 08:37:04.573

  • Issued: Thu, 20 Feb 2025 08:37:04 +0000
  • Space Weather Message Code: ALTTP2
    Serial Number: 1401
    Issue Time: 2025 Feb 20 0837 UTC
    
    ALERT: Type II Radio Emission
    Begin Time: 2025 Feb 19 2338 UTC
    Estimated Velocity: 553 km/s
    
    
    
    Description: Type II emissions occur in association with eruptions on the sun and typically indicate a coronal mass ejection is associated with a flare event.                                

K04A 2025-02-19 20:58:13.087

  • Issued: Wed, 19 Feb 2025 20:58:13 +0000
  • Space Weather Message Code: ALTK04
    Serial Number: 2528
    Issue Time: 2025 Feb 19 2058 UTC
    
    ALERT: Geomagnetic K-index of 4
     Threshold Reached: 2025 Feb 19 2055 UTC
    Synoptic Period: 1800-2100 UTC
     
    Active Warning: Yes
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
    Induced Currents - Weak power grid fluctuations can occur.
    Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.                                

K04W 2025-02-19 20:25:24.497

  • Issued: Wed, 19 Feb 2025 20:25:24 +0000
  • Space Weather Message Code: WARK04
    Serial Number: 4845
    Issue Time: 2025 Feb 19 2025 UTC
    
    WARNING: Geomagnetic K-index of 4 expected
    Valid From: 2025 Feb 19 2024 UTC
    Valid To: 2025 Feb 20 0600 UTC
    Warning Condition: Onset
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
    Induced Currents - Weak power grid fluctuations can occur.
    Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.                                

K05W 2025-02-19 08:04:59.227

  • Issued: Wed, 19 Feb 2025 08:04:59 +0000
  • Space Weather Message Code: WARK05
    Serial Number: 1977
    Issue Time: 2025 Feb 19 0804 UTC
    
    WARNING: Geomagnetic K-index of 5 expected
    Valid From: 2025 Feb 19 0804 UTC
    Valid To: 2025 Feb 19 1500 UTC
    Warning Condition: Onset
    NOAA Scale: G1 - Minor
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Area of impact primarily poleward of 60 degrees Geomagnetic Latitude.
    Induced Currents - Weak power grid fluctuations can occur.
    Spacecraft - Minor impact on satellite operations possible.
    Aurora - Aurora may be visible at high latitudes, i.e., northern tier of the U.S. such as northern Michigan and Maine.                                

K04W 2025-02-19 07:37:07.130

  • Issued: Wed, 19 Feb 2025 07:37:07 +0000
  • Space Weather Message Code: WARK04
    Serial Number: 4844
    Issue Time: 2025 Feb 19 0737 UTC
    
    EXTENDED WARNING: Geomagnetic K-index of 4 expected
    Extension to Serial Number: 4843
    Valid From: 2025 Feb 18 2234 UTC
    Now Valid Until: 2025 Feb 19 1500 UTC
    Warning Condition: Persistence
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Area of impact primarily poleward of 65 degrees Geomagnetic Latitude.
    Induced Currents - Weak power grid fluctuations can occur.
    Aurora - Aurora may be visible at high latitudes such as Canada and Alaska.                                

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