G4 ‘Severe’ Solar Storm Today (Nov. 12, 2025): X5.1 Flare Triggers Radio Blackouts; Northern Lights Stretch From Mexico to Australia
What’s happening now The U.S. National Oceanic and Atmospheric Administration (NOAA) reports that G4 (Severe) geomagnetic storm levels were reached at 01:20 UTC on Nov. 12 and that G1–G4 conditions could continue overnight, driven by successive coronal mass ejections (CMEs). NOAA