Space Weather Alerts

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K07W 2023-04-24 04:46:32.690

  • Issued: Mon, 24 Apr 2023 04:46:32 +0000
  • Space Weather Message Code: WARK07
    Serial Number: 93
    Issue Time: 2023 Apr 24 0446 UTC
    
    EXTENDED WARNING: Geomagnetic K-index of 7 or greater expected
    Extension to Serial Number: 92
    Valid From: 2023 Apr 23 1925 UTC
    Now Valid Until: 2023 Apr 24 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 50 degrees Geomagnetic Latitude.
    Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
    Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
    Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
    Radio - HF (high frequency) radio may be intermittent.
    Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.                                

K06W 2023-04-24 04:46:32.690

  • Issued: Mon, 24 Apr 2023 04:46:32 +0000
  • Space Weather Message Code: WARK06
    Serial Number: 481
    Issue Time: 2023 Apr 24 0446 UTC
    
    EXTENDED WARNING: Geomagnetic K-Index of 6 expected
    Extension to Serial Number: 480
    Valid From: 2023 Apr 23 1830 UTC
    Now Valid Until: 2023 Apr 24 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 55 degrees Geomagnetic Latitude.
    Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
    Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
    Radio - HF (high frequency) radio propagation can fade at higher latitudes.
    Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.                                

K05W 2023-04-24 04:46:32.707

  • Issued: Mon, 24 Apr 2023 04:46:32 +0000
  • Space Weather Message Code: WARK05
    Serial Number: 1765
    Issue Time: 2023 Apr 24 0446 UTC
    
    EXTENDED WARNING: Geomagnetic K-index of 5 expected
    Extension to Serial Number: 1764
    Valid From: 2023 Apr 23 1415 UTC
    Now Valid Until: 2023 Apr 24 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 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.                                

K07A 2023-04-24 04:00:14.213

  • Issued: Mon, 24 Apr 2023 04:00:14 +0000
  • Space Weather Message Code: ALTK07
    Serial Number: 133
    Issue Time: 2023 Apr 24 0400 UTC
    
    ALERT: Geomagnetic K-index of 7
    Threshold Reached: 2023 Apr 24 0359 UTC
    Synoptic Period: 0300-0600 UTC
     
    Active Warning: Yes
    NOAA Scale: G3 - Strong
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Area of impact primarily poleward of 50 degrees Geomagnetic Latitude.
    Induced Currents - Power system voltage irregularities possible, false alarms may be triggered on some protection devices.
    Spacecraft - Systems may experience surface charging; increased drag on low Earth-orbit satellites and orientation problems may occur.
    Navigation - Intermittent satellite navigation (GPS) problems, including loss-of-lock and increased range error may occur.
    Radio - HF (high frequency) radio may be intermittent.
    Aurora - Aurora may be seen as low as Pennsylvania to Iowa to Oregon.                                

K06A 2023-04-24 03:50:31.303

  • Issued: Mon, 24 Apr 2023 03:50:31 +0000
  • Space Weather Message Code: ALTK06
    Serial Number: 522
    Issue Time: 2023 Apr 24 0350 UTC
    
    ALERT: Geomagnetic K-index of 6
    Threshold Reached: 2023 Apr 24 0344 UTC
    Synoptic Period: 0300-0600 UTC
     
    Active Warning: Yes
    NOAA Scale: G2 - Moderate
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Area of impact primarily poleward of 55 degrees Geomagnetic Latitude.
    Induced Currents - Power grid fluctuations can occur. High-latitude power systems may experience voltage alarms.
    Spacecraft - Satellite orientation irregularities may occur; increased drag on low Earth-orbit satellites is possible.
    Radio - HF (high frequency) radio propagation can fade at higher latitudes.
    Aurora - Aurora may be seen as low as New York to Wisconsin to Washington state.                                

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