(NEXSTAR) — On Friday night, the most significant G5 geomagnetic storm since 2003 hit Earth ... When CMEs (which are explosions of plasma and magnetic material from the sun) reach Earth ...

A G3 geomagnetic storm is predicted to strike Earth, with displays of the Northern Lights possible across northern U.S. states.

This particular storm was also caused by coronal mass ejections (CMEs), or plasma and magnetic fields from the sun's corona moving quickly to Earth due to solar winds. Storms can last several days ...