Space Weather Alerts

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P11W 2024-02-11 05:55:49.233

  • Issued: Sun, 11 Feb 2024 05:55:49 +0000
  • Space Weather Message Code: WARPX1
    Serial Number: 539
    Issue Time: 2024 Feb 11 0555 UTC
    
    EXTENDED WARNING: Proton 10MeV Integral Flux above 10pfu expected
    Extension to Serial Number: 538
    Valid From: 2024 Feb 09 1520 UTC
    Now Valid Until: 2024 Feb 12 0600 UTC
    Warning Condition: Persistence
    Predicted NOAA Scale: S1 - Minor
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Radio - Minor impacts on polar HF (high frequency) radio propagation resulting in fades at lower frequencies.                                

XM5S 2024-02-11 02:51:29.010

  • Issued: Sun, 11 Feb 2024 02:51:29 +0000
  • Space Weather Message Code: SUMXM5
    Serial Number: 204
    Issue Time: 2024 Feb 11 0251 UTC
    
    SUMMARY: X-ray Event exceeded M5
    Begin Time: 2024 Feb 10 2256 UTC
    Maximum Time: 2024 Feb 10 2307 UTC
    End Time: 2024 Feb 10 2314 UTC
    X-ray Class: M9.0
    Optical Class: 1f
    Location: S15W09
    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 primarily on sub-solar point on the sunlit side of Earth.
    Radio - Limited blackout of HF (high frequency) radio communication for tens of minutes.                                

MSIS 2024-02-11 02:29:28.597

  • Issued: Sun, 11 Feb 2024 02:29:28 +0000
  • Space Weather Message Code: SUMSUD
    Serial Number: 266
    Issue Time: 2024 Feb 11 0229 UTC
    
    SUMMARY: Geomagnetic Sudden Impulse
    Observed: 2024 Feb 11 0211 UTC
    Deviation: 40 nT
    Station: Boulder
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation                                

K05W 2024-02-11 02:23:28.670

  • Issued: Sun, 11 Feb 2024 02:23:28 +0000
  • Space Weather Message Code: WARK05
    Serial Number: 1852
    Issue Time: 2024 Feb 11 0223 UTC
    
    WARNING: Geomagnetic K-index of 5 expected
    Valid From: 2024 Feb 11 0220 UTC
    Valid To: 2024 Feb 11 1200 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.                                

K04A 2024-02-11 02:20:53.957

  • Issued: Sun, 11 Feb 2024 02:20:53 +0000
  • Space Weather Message Code: ALTK04
    Serial Number: 2425
    Issue Time: 2024 Feb 11 0220 UTC
    
    ALERT: Geomagnetic K-index of 4
     Threshold Reached: 2024 Feb 11 0220 UTC
    Synoptic Period: 0000-0300 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.                                

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