Northern lights tonight in Idaho

Idaho sits at about 51° magnetic latitude, so the aurora reaches it from roughly Kp 7.7 — rare: G4 storms, once or twice a year at solar maximum. The card below reads NOAA's oval, tonight's dark hours, the cloud and the Moon for Stanley, Central Idaho Dark Sky Reserve right now.

Idaho has the only International Dark Sky Reserve in the United States and a magnetic latitude that undersells it: Stanley is 50° magnetic and needs Kp 7, a G3, before the arc shows at all. The panhandle is the real aurora country — Priest Lake at 54° magnetic works from Kp 6 with the lake due north and Canada beyond. Craters of the Moon is the southern dark site for a G4 night when the whole sky lights up. The Sawtooths give the reserve its darkness and take away its northern horizon; pick the valley floor, not the viewpoint.