Severe and Extreme (G4-G5) Geomagnetic Storms Likely on 12 May 2024
published: Saturday, May 11, 2024 17:54 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.