Severe thunderstorms expected on Saturday in parts of U.S. Midwest, South

Portions of eastern Arkansas, southeastern Montana, southern Illinois and western Kentucky are under a risk of scattered severe storms on Saturday, according to National Weather Service meteorologist Alex Lamers.Isolated severe thunderstorms are also expected from upper Mississippi and northeast Texas to the lower Ohio Valley and Tennessee Valley.Last Sunday's tornadoes in Lee County, Alabama, were spawned by a late-winter "supercell" thunderstorm, ripping through homes and businesses with cyclo