Space Weather Alerts

Home » Astronomy Information » Latest Astronomy Alerts » Space Weather Alerts

K07A 2023-03-23 14:50:01.240

  • Issued: Thu, 23 Mar 2023 14:50:01 +0000
  • Space Weather Message Code: ALTK07
    Serial Number: 124
    Issue Time: 2023 Mar 23 1450 UTC
    
    ALERT: Geomagnetic K-index of 7
    Threshold Reached: 2023 Mar 23 1446 UTC
    Synoptic Period: 1200-1500 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 14:47:24.823

  • Issued: Thu, 23 Mar 2023 14:47:24 +0000
  • Space Weather Message Code: WARK07
    Serial Number: 88
    Issue Time: 2023 Mar 23 1447 UTC
    
    WARNING: Geomagnetic K-index of 7 or greater expected
    Valid From: 2023 Mar 23 1447 UTC
    Valid To: 2023 Mar 23 1800 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 14:26:07.797

  • Issued: Thu, 23 Mar 2023 14:26:07 +0000
  • Space Weather Message Code: ALTK06
    Serial Number: 513
    Issue Time: 2023 Mar 23 1426 UTC
    
    ALERT: Geomagnetic K-index of 6
    Threshold Reached: 2023 Mar 23 1423 UTC
    Synoptic Period: 1200-1500 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.                                

K05W 2023-03-23 14:21:35.490

  • Issued: Thu, 23 Mar 2023 14:21:35 +0000
  • Space Weather Message Code: WARK05
    Serial Number: 1757
    Issue Time: 2023 Mar 23 1421 UTC
    
    EXTENDED WARNING: Geomagnetic K-index of 5 expected
    Extension to Serial Number: 1756
    Valid From: 2023 Mar 23 0905 UTC
    Now Valid Until: 2023 Mar 24 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 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.                                

K06W 2023-03-23 14:20:31.340

  • Issued: Thu, 23 Mar 2023 14:20:31 +0000
  • Space Weather Message Code: WARK06
    Serial Number: 475
    Issue Time: 2023 Mar 23 1420 UTC
    
    WARNING: Geomagnetic K-Index of 6 expected
    Valid From: 2023 Mar 23 1420 UTC
    Valid To: 2023 Mar 23 2100 UTC
    Warning Condition: Onset
    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.                                

Latest Astronomy Alerts

Coronal Mass Ejection Alerts

2025-05-26T16:24:00-CME-001

  • Start: 05/26/2025 16:24:00
  • Catalog: M2M_CATALOG
  • Source:
Read More

Space Weather Alerts

A20F 2025-05-26 21:17:28.547

Space Weather Message Code: WATA20 Serial Number: 1042 Issue Time: 2025 May 26 2117 UTC WATCH: Geomagnetic Storm Category G1 Predicted Highest Storm Level Predicted by Day: May 27: None… Read More

Geo Magnetic Storm Alerts

3-Day Forecast - 2025 May 27 0030 UTC

:Product: 3-Day Forecast :Issued: 2025 May 27 0030 UTC # Prepared by the U.S. Dept. of Commerce, NOAA, Space Weather Prediction Center # A. NOAA Geomagnetic Activity Observation and Forecast… Read More

Solar Flare Alerts

2025-05-26T13:27:00-FLR-001

  • Begins: 05/26/2025 13:27:00
  • Ends: 05/26/2025 13:44:00
  • Class: M1.4
Read More