Chicago, IL – A developing storm system is expected to spread accumulating snow across the Midwest this weekend, with several states now looking at a significant chance of 4 inches or more by Monday morning. The latest guidance from the NOAA Weather Prediction Center shows a broad corridor of moderate to heavy snow stretching from Nebraska to Indiana.
According to NOAA, the storm moves in Friday night and intensifies on Saturday, bringing the greatest chances of 4″+ snowfall to eastern Nebraska, northwest Iowa, southern Minnesota, Wisconsin, and northern Illinois, including the Chicago region. Travel conditions may quickly deteriorate, especially in zones highlighted with 40–65% probabilities on the latest WPC snowfall map.
Areas near Storm Lake (65%), Waterloo (46%), Quad Cities (48%), Chicago (36%), and La Salle (33%) fall within the higher confidence corridor. The WPC notes that locally heavier bands could create isolated totals above 4 inches, particularly in central Iowa and southern Minnesota.
Farther south toward Omaha, Des Moines, Keokuk, Champaign, and St. Louis, probabilities drop off, but light accumulations and slick roads remain possible through early Monday.
NOAA warns that travel impacts are likely, especially during periods of heavier snowfall on Saturday and Sunday. Reduced visibility and snow-covered roads could affect both interstate travel and local commutes.
The system exits the region by early Monday, but cold air is expected to linger, keeping untreated surfaces icy.
