Space Weather Alerts

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XM5S 2023-05-16 16:57:56.107

  • Issued: Tue, 16 May 2023 16:57:56 +0000
  • Space Weather Message Code: SUMXM5
    Serial Number: 182
    Issue Time: 2023 May 16 1657 UTC
    
    SUMMARY: X-ray Event exceeded M5
    Begin Time: 2023 May 16 1631 UTC
    Maximum Time: 2023 May 16 1643 UTC
    End Time: 2023 May 16 1651 UTC
    X-ray Class: M9.6
    Location: S23E95
    NOAA Scale: R2 - Moderate
    
    Comment: Flare location is just beyond the SE limb and estimated.
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Area of impact centered primarily on sub-solar point on the sunlit side of Earth.
    Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.                                

XM5A 2023-05-16 16:42:43.630

  • Issued: Tue, 16 May 2023 16:42:43 +0000
  • Space Weather Message Code: ALTXMF
    Serial Number: 311
    Issue Time: 2023 May 16 1642 UTC
    
    ALERT: X-Ray Flux exceeded M5
    Threshold Reached: 2023 May 16 1640 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.                                

K04W 2023-05-13 23:50:10.027

  • Issued: Sat, 13 May 2023 23:50:10 +0000
  • Space Weather Message Code: WARK04
    Serial Number: 4377
    Issue Time: 2023 May 13 2350 UTC
    
    EXTENDED WARNING: Geomagnetic K-index of 4 expected
    Extension to Serial Number: 4376
    Valid From: 2023 May 13 1920 UTC
    Now Valid Until: 2023 May 14 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.                                

K04A 2023-05-13 20:55:07.347

  • Issued: Sat, 13 May 2023 20:55:07 +0000
  • Space Weather Message Code: ALTK04
    Serial Number: 2371
    Issue Time: 2023 May 13 2055 UTC
    
    ALERT: Geomagnetic K-index of 4
    Threshold Reached: 2023 May 13 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 2023-05-13 19:20:04.603

  • Issued: Sat, 13 May 2023 19:20:04 +0000
  • Space Weather Message Code: WARK04
    Serial Number: 4376
    Issue Time: 2023 May 13 1920 UTC
    
    WARNING: Geomagnetic K-index of 4 expected
    Valid From: 2023 May 13 1920 UTC
    Valid To: 2023 May 13 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.                                

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