Science ❯ Astronomy ❯ Solar Activity ❯ Coronal Mass Ejections

Geomagnetic Storms

New X4.2 Solar Flare Erupts From AR4366 as Earlier CME Nears Earth

Forecasters expect a glancing CME to bring minor geomagnetic storm conditions.

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

Astronomers Confirm First Coronal Mass Ejection From a Star Beyond the Sun

Strong Geomagnetic Storm Triggers Widespread Aurora With More Possible Tonight

Northern Lights Possible Across Northern U.S. Tonight as NOAA Issues G1–G2 Storm Watch

G2 Geomagnetic Storm Watch Expands Northern Lights Visibility to 15 States