Science ❯ Astronomy ❯ Solar Activity ❯ Geomagnetic Storms

Auroras

Fast Solar Cloud Triggers G3 Geomagnetic Storm Watch

NOAA says the storm’s final strength will hinge on the CME’s magnetic Bz measured only minutes before it hits Earth.

Strongest Solar Radiation Storm in 23 Years Sends Auroras Far South as Activity Eases

Severe Solar Storm Triggers Widespread Auroras as NOAA Confirms G4 Conditions

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

NOAA Issues G2 Geomagnetic Storm Watch as Giant Sunspot Cluster Faces Earth

Strong Geomagnetic Storm Triggers Widespread Aurora With More Possible Tonight