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.

A powerful storm system that has been sweeping across the central and eastern U.S. has produced violent tornadoes, a dust storm, raging wildfires and even blizzard conditions, tragically leaving more than 30 people dead in its path.