A severe storm hit neighborhoods in Washington County, Nebraska, with residents clearing away debris after it passed.

High winds caused widespread damage across eastern Nebraska, toppling trees, damaging roofs and pulling down electrical lines. About 20 miles (32 kilometers) north of Omaha in Blair, the roof of a warehouse was torn open by high winds.

Thousands of people were left without power in the immediate aftermath.

In the state capital of Lincoln, the storms damaged two housing units at the Nebraska State Penitentiary, displacing 387 prisoners, the state Department of Correctional Services said in a statement.

Strong storms also moved through parts of eastern Wisconsin on Saturday, bringing gusts of 60 mph (97 kph) to the state's Door Peninsula, the National Weather Service said.

The weather service said more strong storms were possible across the nation's midsection Saturday night into Sunday, stretching from western Colorado into Kansas, Nebraska, Iowa, northern Missouri and into Illinois and Wisconsin.