Science ❯ Astronomy ❯ Solar Activity ❯ Geomagnetic Storms

Aurora Borealis

Fast CME Triggers S4 Radiation Storm and G4 Geomagnetic Event, Auroras Visible Far South

NOAA deems it the strongest radiation storm since 2003, with conditions expected to ease after Jan. 20.

Auroras Sweep the U.S. After G4 Storm as Forecasters Watch for More Activity Into Thursday

Aurora Watch: Minor Geomagnetic Storms Could Bring Northern Lights Tonight