Space Weather Alerts

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

EF3A 2023-05-23 13:28:02.500

  • Issued: Tue, 23 May 2023 13:28:02 +0000
  • Space Weather Message Code: ALTEF3
    Serial Number: 3333
    Issue Time: 2023 May 23 1328 UTC
    
    CONTINUED ALERT: Electron 2MeV Integral Flux exceeded 1000pfu
    Continuation of Serial Number: 3332
    Begin Time: 2023 May 22 1545 UTC
    Yesterday Maximum 2MeV Flux: 1267 pfu
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Potential Impacts: Satellite systems may experience significant charging resulting in increased risk to satellite systems.                                

TIVA 2023-05-23 13:09:22.720

  • Issued: Tue, 23 May 2023 13:09:22 +0000
  • Space Weather Message Code: ALTTP4
    Serial Number: 603
    Issue Time: 2023 May 23 1309 UTC
    
    ALERT: Type IV Radio Emission
    Begin Time: 2023 May 23 1120 UTC
    
    NOAA Space Weather Scale descriptions can be found at
    www.swpc.noaa.gov/noaa-scales-explanation
    
    Description: Type IV emissions occur in association with major eruptions on the sun and are typically associated with strong coronal mass ejections and solar radiation storms.                                

K04W 2023-05-22 23:27:13.070

  • Issued: Mon, 22 May 2023 23:27:13 +0000
  • Space Weather Message Code: WARK04
    Serial Number: 4385
    Issue Time: 2023 May 22 2327 UTC
    
    EXTENDED WARNING: Geomagnetic K-index of 4 expected
    Extension to Serial Number: 4384
    Valid From: 2023 May 22 1937 UTC
    Now Valid Until: 2023 May 23 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 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.                                

K05W 2023-05-22 23:27:13.117

  • Issued: Mon, 22 May 2023 23:27:13 +0000
  • Space Weather Message Code: WARK05
    Serial Number: 1779
    Issue Time: 2023 May 22 2327 UTC
    
    WARNING: Geomagnetic K-index of 5 expected
    Valid From: 2023 May 22 2325 UTC
    Valid To: 2023 May 23 0600 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 2023-05-22 20:49:37.467

  • Issued: Mon, 22 May 2023 20:49:37 +0000
  • Space Weather Message Code: ALTK04
    Serial Number: 2374
    Issue Time: 2023 May 22 2049 UTC
    
    ALERT: Geomagnetic K-index of 4
    Threshold Reached: 2023 May 22 2042 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.                                

Latest Astronomy Alerts

Coronal Mass Ejection Alerts

2025-03-17T11:36:00-CME-001

  • Start: 03/17/2025 11:36:00
  • Catalog: M2M_CATALOG
  • Source: N12W30
Read More

Space Weather Alerts

K04A 2025-03-17 21:02:26.323

Space Weather Message Code: ALTK04 Serial Number: 2536 Issue Time: 2025 Mar 17 2102 UTC ALERT: Geomagnetic K-index of 4 Threshold Reached: 2025 Mar 17 2059 UTC Synoptic Period: 1800-2100… Read More

Geo Magnetic Storm Alerts

3-Day Forecast - 2025 Mar 18 0030 UTC

:Product: 3-Day Forecast :Issued: 2025 Mar 18 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

2025-03-17T19:25:00-FLR-001

  • Begins: 03/17/2025 19:25:00
  • Ends: 03/17/2025 19:40:00
  • Class: M1.0
Read More