Flood Threat Persists Across Midwest Through Weekend
• A stalled weather pattern is bringing heavy rain, flash flooding, and severe storms to parts of the Plains, Midwest, and Great Lakes through Sunday, September 20,
• The National Weather Prediction Center (WPC) has issued a Level 2 out of 4 flash flood threat for the region, with widespread rainfall totals of 5-8 inches expected. Areas from Northern Illinois to the Indiana-Ohio border are at the highest risk for flash flooding on Wednesday, with storms also targeting the Interstate 80 corridor from Iowa into northern Illinois. Earlier in the week, heavy rain caused rivers and creeks to overflow in Western Iowa, particularly in Cass County. The weather pattern is fueled by a heat dome over the Southeast, which is channeling tropical moisture into the region, creating conditions for intense rain rates and prolonged storms.
Impact & Risks
Millions of residents across the Midwest and Central Plains are under threat of flash flooding through the weekend. Areas already impacted by earlier flooding, such as southeastern Iowa and the Quad Cities, face heightened risks of additional flooding. The Interstate 80 corridor, including Chicagoland, is expected to experience heavy downpours, potentially disrupting travel and daily activities. Severe storms may also develop over Nebraska, Kansas, and Iowa on Friday, with heavy rain forecast for southern Minnesota and Wisconsin, including Minneapolis and Milwaukee. The risk of property damage, road closures, and localized evacuations remains significant.
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