Northern lights alert: Aurora may appear in multiple U.S. states tonight

A fast-moving coronal mass ejection is anticipated to reach Earth, increasing the chance of a severe geomagnetic storm. NOAA forecasters have issued a G4 watch, which means auroras may spread much farther south than normal. Visibility relies on how the storm’s magnetic field aligns with Earth. Clear skies, low light pollution, and late-night hours will enhance viewing chances. The strongest activity is predicted overnight into early Tuesday.