Residents in a few of the U.S.’ northernmost states will have a chance to spot the northern lights Thursday night, according to a forecast from the National Oceanic and Atmospheric Administration.

The northern lights surprise stargazers by appearing in many forms—from patches or scattered clouds, to streamers, arcs, rippling or dancing curtains. The lights move and change shape and color.

Another geomagnetic storm means another chance for some lucky Americans to witness the northern lights this week after the second largest solar flare of the current cycle was observed Tuesday.