Millions of people in the Midwest and Great Plains are in the path of numerous severe thunderstorms expected on Monday. Kansas City is expecting winds up to 50 MPH and half-dollar-sized hail that could damage roofs or cars.

Cities such as Chicago, Minneapolis and Milwaukee are at risk for a severe weather outbreak, forecasters said.

"Severe thunderstorms capable of all severe hazards remain possible this evening across portions of the central and southern Plains," a forecast from the National Weather Service's Storm Prediction Center (SPC) said. "Several strong to intense tornadoes are possible," it added.

Southern and eastern Oklahoma continue to see severe weather and the occasional tornado warning into Monday evening.

Aerial video footage from areas in the South and Midwest, including Kentucky, show a trail of destruction left by devastating storms and tornadoes.

Severe weather slammed several states in the Upper Midwest Thursday, dropping a few funnel clouds and likely tornadoes in Minnesota and Wisconsin.

The NWS confirmed a tornado struck southwest of Arnett. Residents were warned to take shelter. The agency said "risk for tornadoes and extremely large (3+) inch hail continues north and east of Harmon." Tornado warnings also have been issued for the towns of Sharon and Harmon until 7 p.m. May 18.