Three people have been killed in an apparent tornado in southern Michigan on Friday, authorities said, as powerful storms ripped across the state, tearing the roof off a home improvement store and knocking down trees.

A tornado was reported Friday afternoon as a severe storm moved across parts of southwest Michigan, leaving 4 dead and 12 injured, officials say.

A threat of severe weather across the nation's midsection continued Saturday, a day after powerful storms whipped up tornadoes that killed four people in southern Michigan and two people in eastern Oklahoma.

At least four people have died, and several others were injured after multiple tornadoes ripped through Southwest Michigan on Friday, authorities say.

Severe storms are sweeping across the central US, and forecasters warn tornadoes could turn dangerous across several states.

More than 7 million people were at the highest risk of severe weather Friday in areas including Kansas City, Missouri; Tulsa, Oklahoma; and Omaha, Nebraska.

A tornado was reported Friday afternoon as a severe storm moved across parts of southwest Michigan, leaving 4 dead and 12 injured, officials say.

Tornadoes damaged buildings, cut power and injured more than a dozen people in the two states as severe weather swept across the central United States.