Midwest and South battered by severe thunderstorms and large hail

Thunderstorms, large hail, destructive wind gusts and strong tornadoes threaten up to 73 million people across the Mississippi, Ohio and Tennessee Valleys on Sunday.By evening, Michigan, Missouri and Mississipi each had preliminary tornado reports as a storm system slowly marched east, producing a line of thunderstorms, rain, strong winds and hail from Ohio to Texas.Parts of Tennessee, Arkansas, Kentucky and Tennessee were subjected to tornado watches and warnings Sunday night. Many expired while others were issued as the low pressure front moved east-northeast, according to the National Weather Service.The possibility of strong tornadoes and destructive wind gusts exceeding 65 mph are associated with the front as it pushes cold air into warm in a clash that roils the atmosphere and creates conditions ripe for tornadoes.NBC affiliate WNDU of South Bend, Indiana, broadcast footage of apparent wind damage, including a flattened structure in Elkhart County, east of South Bend, and a large...