An extreme geomagnetic storm can cause some major issues. Ryan French, Solar Astrophysicist at the Laboratory for Atmospheric and Space Physics at the University of Colorado Boulder, said, “A geomagnetic storm is essentially the reaction of Earth’s magnetic field,

A powerful geomagnetic storm caused by an X-class solar flare and a fast-moving coronal mass ejection has disrupted Earth's magnetic field, pushing auroras far beyond their usual polar range. As scientists monitor impacts,

The sun sure has woken up this week, unleashing a powerful X-class solar flare on Jan. 18 that hurled a colossal, fast-moving coronal mass ejection (CME) directly toward Earth. That CME has now arrived, triggering severe (G4) geomagnetic storm conditions far earlier than initially forecast.

A “severe” geomagnetic storm lit up the sky Monday night in central Pennsylvania. Scientists at the Space Weather Prediction Center said the storm had the potential to make the northern lights visible across a large part of the United States,

The National Oceanic and Atmospheric Administration is predicting a G4-level geomagnetic storm after a long-duration solar flare erupted a couple of days ago.

Geomagnetic conditions are starting to settle, but auroras are still highly likely in the northern tier of the United States tonight, according to NOAA's latest forecasts. Strong (G3-level) geomagnetic storms remain possible overnight,