Eleven storm-related fatalities were reported in the Missouri counties of Ozark, Butler, Wayne and Jefferson, the state highway patrol said. Three people were confirmed dead in Independence County, Arkansas, the state's emergency management division said. Four were reported dead in Texas, officials said Saturday.

About 47 million people faced an enhanced to moderate severe storm threat from Madison, Wisconsin, to Birmingham, Alabama.

A powerful storm is moving across the country and spawning multiple fires and severe thunderstorms with hurricane-force wind gusts and tornadoes that are knocking out power and causing damage Tuesday.