The northern lights may be visible overnight from up to 27 northern U.S. states on Friday, April 17, into Saturday, April 18, 2026, during a G2 geomagnetic storm.

The northern lights may be visible overnight from up to 27 northern U.S. states on Friday, April 17, into Saturday, April 18, 2026, during a G2 geomagnetic storm.

Nearly one-third of the U.S. could be among areas the National Oceanic and Atmospheric Administration said could see the aurora borealis in the sky.