Severe and Extreme (G4-G5) Geomagnetic Storms Likely on 12 May 2024 | NOAA / NWS Space Weather Prediction Center

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Severe and Extreme (G4-G5) Geomagnetic Storms Likely on 12 May 2024

Severe and Extreme (G4-G5) Geomagnetic Storms Likely on 12 May 2024
published: Monday, May 13, 2024 12:25 UTC

Another series of CMEs associated with flare activity from Region 3664 over the past several days are expected to merge and arrive at Earth by midday (UTC) on 12 May. Periods of G4-G5 (Severe-Extreme) geomagnetic storms are likely to follow the arrival of these CMEs.