The threat of tornadoes moved east into the Mississippi Valley and Deep South on Saturday, a day after a massive storm system moving across the country unleashed winds that damaged buildings, whipped up deadly dust storms and fanned more than 100 wildfires.

A powerful storm system roared across the Midwest and South Friday night, unleashing a series of tornadoes that carved paths of destruction and left at least three dead in Missouri.

At least 16 people have been killed in a monster storm sweeping across much of the U.S. Ten people were killed in Missouri after a tornado outbreak, the Missouri State Highway patrol said Saturday. The agency said multiple people were also injured.