OKLAHOMA CITY — Tornadoes raked the southern Plains Wednesday, overturning cars on an Oklahoma City interstate and destroying dozens of homes.

No deaths were immediately reported from the twisters that hit Oklahoma and rural parts of Kansas and Nebraska.

The worst damage seemed to be in the Oklahoma City area. A twister destroyed homes at Bridge Creek, Amber and Blanchard, southwest of the city, and it appeared another tornado touched down later Wednesday evening when a second storm came through the area.

“We have damage reports, so we do strongly think there was a tornado on the south side of Oklahoma City,” meteorologist Michael Scotten with the National Weather Service in Norman said after the second storm that hit around 8:40 p.m.

That storm flipped vehicles on Interstate 35 and left power lines strewn across the roadway, Scotten said.

Lara O’Leary, a spokeswoman for Emergency Medical Services Authority said late Wednesday that the company transported 12 patients from a trailer park in south Oklahoma City to local hospitals. She did not have further details about the extent of the patients’ injuries.

In Grady County, all animals were accounted for after a zoo about 25 miles southwest of Oklahoma City was hit by a tornado, Alisa Voegeli, a dispatcher at the sheriff’s office, said.

The storms dumped up to 6 inches in the southern part of Oklahoma City, prompting the city to issue a flash flood emergency for the first time in its history, said city spokeswoman Kristy Yager. Road crews were waiting for the storms to abate to set up barricades and evaluate trouble spots.

“They’ll dispatch as soon as the storms end and the weather clears,” Yager said.

O’Leary said the ambulance service responded to water rescues “all over” the Oklahoma City metro area.