The storm could also impact power systems and spacecraft operations.

A powerful geomagnetic storm caused by an X-class solar flare and a fast-moving coronal mass ejection has disrupted Earth's ...

A G-4 Geomagnetic Storm Watch has been issued for tonight and early Tuesday. This is considered a severe solar storm watch, ...

A geomagnetic storm occurs when high-energy plasma and magnetic fields ejected from the sun interact with Earth's magnetic ...

A geomagnetic storm that occurred on Sunday may make the Northern Lights visible on Monday or Tuesday, the National Oceanic ...

An extreme geomagnetic storm can cause some major issues.

A rare and fast CME triggered a severe G4 geomagnetic storm, producing brilliant auroras seen across Europe and the U.S.

Northern lights were reported across mid-latitudes, with sightings stretching from Germany to the southwestern United States, ...

A minor geomagnetic storm may increase northern lights visibility tonight as fast solar wind interacts with Earth’s magnetic field, according to Space.com forecasts.

A blistering coronal mass ejection from the Sun raced to Earth in just 25 hours, triggering a severe G4 geomagnetic storm and ...

A severe geomagnetic storm means there's a chance for a spectacular display of the northern lights over the US tonight.

Powerful geomagnetic storms can result in beautiful visible auroras in the night sky, but they can also cause some technological issues, as well. This week, a "severe" G4 geomagnetic storm is expected ...