A moderate geomagnetic storm could bring northern lights displays to U.S. states further south than usual, forecasts show. The National Oceanic and Atmospheric Administration Space Weather Prediction Center has issued a storm watch for a G2 geomagnetic storm due to a coronal mass ejection expected to begin Wednesday at 8 p.

The unusual viewing opportunity has been triggered by a coronal mass ejection (CME), a powerful release of solar plasma and magnetic energy that erupted from the Sun on March 16.

The planet is experiencing the most powerful solar event since 2003—and it's bringing spectacular Northern Lights.