Updated

DEXTER, Mich. (AP) — Severe thunderstorms sweeping through the Midwest have killed a motorist in Michigan, shattered windows in an iconic Chicago skyscraper and knocked out power to hundreds of thousands of people.

Sheriff's officials say a driver was killed near Dexter, Mich., about 40 miles west of Detroit, when winds toppled a tree onto a vehicle.

In Chicago, powerful winds and heavy rains broke windows in the 110-story Willis Tower. Witnesses say the debris looked like icicles falling from the skyscraper, formerly known as Sears Tower.

Utility officials say power is out for about 215,000 Chicago-area customers and 150,000 in Michigan.

In Indiana, winds gusts stronger than 75 mph knocked out power to about 60,000 customers. Storms left about 19,000 in the dark in Wisconsin.