Rockford, Ill. – A fast-moving line of storms is expected to sweep across northern Illinois, southern Wisconsin, and western Michigan Wednesday night, bringing damaging winds up to 70 mph between 8 p.m. and 1 a.m. Thursday. Widespread power outages and downed trees are possible across the tri-state region.
According to the National Weather Service in Grand Rapids, storms developing later this evening may turn severe, especially after sunset. While earlier storms this afternoon are expected to remain sub-severe, the primary late-night threat will be gusty winds capable of snapping branches and toppling power lines. Areas at highest risk include Rockford, Chicago, Madison, Janesville, Grand Rapids, Holland, and Kalamazoo.
The wind corridor follows major travel routes like Interstates 39, 90, 94, and 196, where reduced visibility and debris on the roads could make driving hazardous. Isolated pockets of heavy rainfall could also lead to localized flooding, particularly in urban or low-lying areas.
Residents are urged to charge devices, avoid unnecessary travel, and secure outdoor objects before storms arrive. While hail and tornado risks are minimal, they cannot be ruled out.
Storms are expected to exit the region by early Thursday morning, but more advisories may be issued if the system strengthens.
