The storms caused "extensive damage to residential and commercial properties," and knocked down power lines, traffic lights, and trees throughout the area, the fire department said. By Sunday night, more than 17,000 people were without power — down from the nearly 82,000 people left in the dark Sunday morning, according to poweroutage.us.

More severe weather is expected in the Southern Plains Monday as residents in Oklahoma survey the destruction from tornado-spawning storms that injured at least 11 people and leveled homes over the weekend.

Tornado-warned storms continue to move across Oklahoma on Monday after multiple were issued earlier in the morning and a day after the state saw several tornadoes. >> Check live radar | KOCO weather page | Get KOCO on the Go Sign up for our NewslettersOpen the video player above for live coverage from Chief Meteorologist Damon Lane and the First Alert Weather Team.