At least 13 tornadoes tore through Alabama Saturday night, and that number could go up as meteorologists with the National Weather Service continue their storm damage surveys.

People across several states grapple with the devastating aftermath of severe weather after dozens of tornadoes, including 3 EF4 storms, raked across 11 states in the central and southern US killed at least 24 people.

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.