Green Bay, Wisconsin – A rare overnight sky display could unfold across Wisconsin within hours as a solar storm drives the northern lights into view late Sunday.
According to the NOAA Space Weather Prediction Center, a G2 (moderate) geomagnetic storm will peak between 10 p.m. Sunday and 2 a.m. Monday, allowing aurora activity to expand deep into the Upper Midwest. The event is fueled by lingering solar eruption energy combined with a fast-moving solar wind stream.
The best viewing conditions will be across northern Wisconsin, including Wausau, Rhinelander, and areas near Lake Superior. Cities like Green Bay and even parts of central Wisconsin could see green and pink light bands low on the northern horizon, especially in darker locations away from city lights.
Drivers along I-41 and US-51 may notice brighter skies overnight, though no travel impacts are expected. For the best view, residents should head to open areas with a clear northern view and allow at least 20 minutes for their eyes to adjust.
Cloud cover may limit visibility at times, but breaks could develop overnight. Elevated geomagnetic activity may continue into early Monday, with additional updates possible if storm strength increases.
