The northern lights glow beyond Perry Lake Wednesday, Nov. 12, 2025, near Perry, Kan. (AP Photo/Charlie Riedel)

The northern lights may be visible this Saturday night in northern U.S. states and Canada after scientists at the National Oceanic and Atmospheric Administration forecast a G1 geomagnetic storm will strike overnight. With a new moon on Saturday, May 16, the sky will be free from moonlight all weekend, allowing faint aurora to be seen.

Northern Lights Alert: Where And When

A G1 geomagnetic storm may mean aurora seen from northern U.S. states overnight on Saturday, May 16, through Sunday, May 17, likely as a greenish or reddish glow on the northern horizon. That makes it important to be away from urban light pollution in the northern sky, with resources including a light pollution map and a catalog of Dark Sky Places particularly useful.

States with the potential to see northern lights include Alaska and (northerly parts of) Washington, Idaho, Montana, North Dakota, South Dakota, Minnesota, Wisconsin, Michigan and Maine.