Nearly all of the 50 homes in this town were destroyed and hundreds of thousands of people were left without power Saturday after a line of storms tore across several states.

A tornado here left 15 people injured.

"When she hit, I just laid down on the floorboard and held on," Deputy Fire Chief Dennis Behnkendorf said. "Everything was flying past the door. I jumped onto the ground and held on for dear life."

While Iowa was hardest hit, Friday's severe weather knocked out power through parts of West Virginia, Nebraska, Michigan, Ohio and Pennsylvania. Michigan authorities blamed three deaths on the storm -- all because of trees falling on cars Friday.

About 100 homes were flooded in Medina County in northeast Ohio, authorities said.

Tornado Alley, a swath running from west Texas through Oklahoma and Kansas to Iowa, is ripe for stormy conditions because of colliding air masses that occur each spring.

In Iowa's Pocahontas County, sheriff's officers said a tornado moved through a golf course and cemetery in Rolfe, population 721, before ripping through Bradgate in neighboring Humboldt County.

Elsewhere, severe thunderstorms and a possible tornado swept across much of West Virginia, from the Ohio River to the Virginia border.

In northeast Ohio, where several rivers were near flood stage, 74,000 customers were without electricity.

The storms knocked out power to nearly 60,000 residents in West Virginia, and about 173,000 were in the dark in Michigan. At least 75,000 in Pennsylvania lost power in the storms.

At least two tornados touched down in central Nebraska, but no injuries were reported, the National Weather Service said.