There were reports of people trapped in homes and businesses, after a massive storm system pounded the Georgia town of Adairsville, about 60 miles northwest of Atlanta.
Video showed a funnel cloud roaring through the downtown area, flipping cars and demolishing a home.
Large sections of a manufacturing plant appeared to be destroyed.
An interstate highway was closed in both directions, after the storm flipped cars onto their roofs and tossed them onto the shoulder.