Current Aurora Forecast for Wisconsin
As of the latest public data, NOAA's Space Weather Prediction Center shows a G1 minor geomagnetic storm watch for the coming hours, which can push the auroral oval southward into northern Wisconsin. The Kp index is expected to reach 5 to 6, a level that historically allows the northern lights to be visible from latitudes around 44°N to 47°N, where much of Wisconsin sits. Real-time aurora maps from NOAA and university-run networks show the probability of overhead aurora for cities like Green Bay, Superior, and Ashland at 20% to 40% tonight, while southern Wisconsin remains below 10%. The primary driver is a coronal mass ejection from a recent solar flare, with arrival timing modeled using data from the Deep Space Climate Observatory satellite and ground-based magnetometers. For the latest forecast updates, see NOAA's Space Weather Prediction Center page on aurora forecasts at https://www.swpc.noaa.gov/forecasts/aurora-forecast/.
Space weather models from the Community Coordinated Modeling Center at NASA Goddard Space Flight Center predict a peak in geomagnetic activity between late evening and midnight local time, with a secondary possible enhancement in the pre-dawn hours. The European Space Agency's Space Weather Service and the Finnish Meteorological Institute's aurora borealis forecast both show a moderate chance of visible aurora from the Upper Peninsula and northern Wisconsin under clear skies. The National Oceanic and Atmospheric Administration's Dst index, a measure of geomagnetic disturbance, is forecast to dip to around minus 50 nanoteslas, which typically corresponds to a visible aurora at Wisconsin's northern latitudes. The U.S. National Weather Service office in Duluth, Minnesota, which covers northern Wisconsin, has issued a short-term outlook noting clear skies and low cloud cover for much of the region tonight, improving visibility odds. For additional modeling details, see the NASA Community Coordinated Modeling Center's public runs at https://ccmc.gsfc.nasa.gov/.
Best Locations and Viewing Conditions in Wisconsin
Northern Wisconsin, including the Apostle Islands, Chequamegon-Nicolet National Forest, and the shoreline of Lake Superior, offers the darkest skies and highest probability of seeing the northern lights tonight. Light pollution maps from the World Atlas of Artificial Night Sky Brightness show the darkest zones in the state along the Lake Superior coast and in the far north, with Bortle class 3 to 4 skies that are favorable for aurora viewing. The University of Wisconsin–Madison's Space Science and Engineering Center provides real-time all-sky camera imagery from sites across the state, allowing viewers to check current cloud cover and sky brightness before heading out. The Midwest Aurora Chasers community and the Great Lakes Aurora Alerts group use these camera feeds and NOAA data to issue real-time sighting reports for Wisconsin and neighboring states. For a live view of current conditions, see the UW–Madison SSEC all-sky camera network at https://www.ssec.wisc.edu/.
Viewers in the Green Bay and Milwaukee metro areas face higher light pollution, but the aurora can still appear low on the northern horizon when the Kp index reaches 6 or higher, especially from parks, beaches, and open fields facing north. The Dark Site Finder and the International Dark-Sky Association list several Wisconsin locations with certified or candidate dark-sky status, including Newport State Park near Ephraim and the Headlands International Dark Sky Park in Mackinaw City, Michigan, just across the state line. Tonight's geomagnetic activity level, combined with a new moon phase that minimizes sky brightness, creates a favorable window for aurora observation across the northern third of the state. The American Meteor Society's fireball and aurora reporting tool can be used to submit and check real-time sightings for Wisconsin and the broader Midwest. For more on dark-sky locations and planning, see the International Dark-Sky Association's directory at https://