Hasty Briefsbeta

Level S4 solar radiation event

18 days ago
https://www.swpc.noaa.gov/news/g4-severe-geomagnetic-storm-levels-reached-19-jan-2026
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  • #Space Weather
  • #CME
  • #Geomagnetic Storm
  • G4 (Severe) Geomagnetic Storm levels were reached at 2:38pm EST (1938 UTC) on 19 January, 2026.
  • The storm was triggered by a CME (Coronal Mass Ejection) shock arrival.
  • CME passage is expected to continue through the evening, with G4 levels remaining possible.
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