Northern lights tonight in Michigan

Michigan sits at about 55° magnetic latitude, so the aurora reaches it from roughly Kp 5.7 — a few nights a year, on G2–G3 storms. The card below reads NOAA's oval, tonight's dark hours, the cloud and the Moon for Headlands International Dark Sky Park, Mackinaw City right now.

Michigan is the most-searched aurora state in the lower 48 for a geometric reason: at 55–56° magnetic latitude the Keweenaw needs only Kp 5, a G1 storm, and the Straits about Kp 6. Both shores of Lake Michigan and the whole Superior coast give a flat water horizon due north with no town behind it, which is what an arc at 5° elevation needs. Headlands has the darkest sky reachable from the Lower Peninsula in an evening; Keweenaw is darker and 200 km further into the oval; Port Crescent is the Thumb's answer for Detroit and Flint.