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.

Dozens of tornadoes, including 2 EF4 strength storms, raked across 11 states Friday into Saturday, killing two dozen people.

On Monday, 8 million people were under winter storm watches and warnings, although the storms' impacts were less severe than those over the weekend.