Millions of Americans across the country are on alert for a severe weather outbreak as violent, long-track tornadoes with damaging winds of up to 80 mph and large hail are expected across the Midwest and South with the cross-country storm moving east.

Residents pounded by unusually vicious weather across parts of the U.S. surveyed damage Sunday from violent tornadoes, high winds and blinding dust storms that decimated homes and other structures and left at least 35 people dead.