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Flash flood threat targets Midwest before heading to Northeast: Latest

1:13
Flash flood threat on the move after storms hit Southwest and Midwest
WPTA
ByKenton Gewecke
September 18, 2026, 3:12 PM

A flash flood threat is on the move, heading to Minnesota and Wisconsin on Friday before targeting Chicago and then New York City.

A level 2 out of 4 flash flood threat is in place from South Dakota to Illinois on Friday, including the cities of Minneapolis, Milwaukee, and Madison, Wisconsin. The threat for wind, hail and tornadoes remains low. 

Flash Flood Threat Map
ABC News

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Showers are already underway in South Dakota and will continue through the day, with another heavy round of rain hitting southern Minnesota, northern Iowa, Wisconsin, and northern Illinois overnight. Milwaukee will face its heaviest rain overnight.

By Saturday morning, the heavy rain could reach Chicago, causing issues on roadways.

Over the weekend, a level 2 flood threat will be in place from Iowa to Ohio, including the cities of Milwaukee, Chicago and Grand Rapids, Michigan. The heavy rain is forecast to hit on Saturday morning, Saturday night and Sunday.

Flash Flood Threat Map
ABC News

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And on Sunday the threat will spread east into the Northeast. A level 2 flood threat is in place for New York City, Long Island, Stamford, Connecticut, and Allentown, Pennsylvania.

The heaviest rain is forecast to hit Sunday night and overnight into Monday morning, which could make the Monday morning commute dangerous.

Flash Flood Threat Map
ABC News

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