Science ❯ Astronomy ❯ Solar Activity ❯ Geomagnetic Storms

Coronal Mass Ejections

Severe Solar Storm Triggers Widespread Auroras as NOAA Confirms G4 Conditions

Forecasters expect conditions to ease after the Jan. 19–20 peak.

G3 Geomagnetic Storm Possible Today as Full-Halo CME Reaches Earth

Severe Solar Storm Ignites Auroras as Forecasters Track Third, Stronger CME

X2.7 Solar Flare Prompts Global Disruptions and Aurora Forecasts