Much of the state, including Oklahoma City, Stillwater, Ardmore, and Ada, is expected to experience a moderate risk of tornadoes, which is the second-highest severity. Storms could produce softball-sized hail and wind speeds could top 80 mph,

Breaking: Sequoya Quinton reports live sighting of a large tornado near Kiowa power plant. Caution advised in the area. Live updates.

Oklahoma tornado watch is in effect until Monday evening. Live updates and video as News 9 tracks the severe weather risk.

A tornado watch is issued when the environment is capable of producing tornadoes. If you are located in the area of a tornado watch, the NWS recommends having a plan in place in the event a tornado forms. Be ready to act quickly if a tornado warning is issued.

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.

A new tornado watch has been issued for southwestern Kansas and western Oklahoma until 10 p.m. CDT. According to the Storm Prediction Center, a few tornadoes are possible and a couple could be intense (EF3 or stronger). Widespread large hail (up to 3 inches in diameter) and damaging wind gusts up to 70 mph are all possible.

Severe storms Monday could bring tornadoes, damaging winds, and softball-size hail to Bartlesville and northeast Oklahoma.

Experts say planning before a tornado threatens is key for staying safe. Weather radios, basements and bicycle helmets can all help save lives.

A relentless stretch of severe weather that left 28 dead and unleashed destruction across the central and eastern United States in recent days isn’t letting up yet, with millions more in the path of dangerous weather this week.