At least 13 people are dead after severe weather hit parts of Missouri and Arkansas overnight, officials said. Ten storm-related fatalities were reported in the Missouri counties of Ozark, Butler, Wayne and Jefferson,

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 moveing east.