Space Weather Alerts

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K07A 2023-03-23 23:55:42.303

  • Issued: Thu, 23 Mar 2023 23:55:42 +0000
  • Space Weather Message Code: ALTK07
    Serial Number: 126
    Issue Time: 2023 Mar 23 2355 UTC
    
    ALERT: Geomagnetic K-index of 7
    Threshold Reached: 2023 Mar 23 2354 UTC
    Synoptic Period: 2100-2400 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.                                

K07W 2023-03-23 22:51:16.583

  • Issued: Thu, 23 Mar 2023 22:51:16 +0000
  • Space Weather Message Code: WARK07
    Serial Number: 89
    Issue Time: 2023 Mar 23 2251 UTC
    
    WARNING: Geomagnetic K-index of 7 or greater expected
    Valid From: 2023 Mar 23 2250 UTC
    Valid To: 2023 Mar 24 0300 UTC
    Warning Condition: Onset
    NOAA Scale: G3 or greater - Strong to Extreme
    
    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 2023-03-23 21:48:00.563

  • Issued: Thu, 23 Mar 2023 21:48:00 +0000
  • Space Weather Message Code: ALTK06
    Serial Number: 515
    Issue Time: 2023 Mar 23 2148 UTC
    
    ALERT: Geomagnetic K-index of 6
    Threshold Reached: 2023 Mar 23 2146 UTC
    Synoptic Period: 2100-2400 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.                                

K05A 2023-03-23 21:36:25.983

  • Issued: Thu, 23 Mar 2023 21:36:25 +0000
  • Space Weather Message Code: ALTK05
    Serial Number: 1445
    Issue Time: 2023 Mar 23 2136 UTC
    
    ALERT: Geomagnetic K-index of 5
    Threshold Reached: 2023 Mar 23 2133 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.                                

A20F 2023-03-23 21:22:41.030

  • Issued: Thu, 23 Mar 2023 21:22:41 +0000
  • Space Weather Message Code: WATA20
    Serial Number: 940
    Issue Time: 2023 Mar 23 2122 UTC
    
    WATCH: Geomagnetic Storm Category G1 Predicted
    
    Highest Storm Level Predicted by Day:
    Mar 24:  G2 (Moderate)   Mar 25:  G1 (Minor)   Mar 26:  G1 (Minor)
    
    THIS SUPERSEDES ANY/ALL PRIOR WATCHES IN EFFECT
    
    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.                                

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