Family members look at the remains of their home that was destroyed by a tornado Wednesday in Bentley, Kan. More than a dozen suspected tornadoes swept across the southern Plains.

OKLAHOMA CITY — Authorities are investigating the damage left behind by spring storms carrying more than a dozen suspected tornadoes that swept across the southern Plains, bringing floods and destroying homes.

At least 12 people were injured, but no deaths were immediately reported from the twisters that also hit rural parts of Texas, Kansas and Nebraska on Wednesday night.

The Oklahoma City area seemed to be the hardest hit. A twister destroyed homes in Grady County, and it appeared another tornado touched down Wednesday evening.

The storm flipped vehicles on Interstate 35 and left power lines strewn across the roadway. Officials twice evacuated the Will Rogers World Airport in Oklahoma City, sending passengers and staff into a tunnel.

Before sunrise today in northeast Oklahoma City, fire department divers worked for hours to rescue a motorist who was trapped in a car by the high waters left in the wake of the storms. The female driver used her cell phone to call for help from inside the car.

The National Weather Service said 5 to 8 inches of rain fell in the area. A measurement of 7.1 inches at the Oklahoma City airport set a new daily rainfall record, topping the previous record of 2.61 inches.

The rainfall prompted the city to issue a flash flood emergency for the first time in its history.

Lara O’Leary, a spokesman for Emergency Medical Services Authority, said ambulances responded to water rescues “all over” the Oklahoma City metro area.

Two ambulance crews also required assistance after getting stuck in high water.

O’Leary said ambulances took 12 residents from a trailer park in south Oklahoma City to hospitals. She had no details about their injuries.

In Nebraska, 10 to 15 homes were damaged near Grand Island and near the Kansas line.

At least nine tornadoes were reported in Kansas, the strongest of them in the sparsely populated north-central part of the state. That included a large tornado near the tiny town of Republic just south of the Nebraska state line, where some homes were damaged. In Harvey County, a tornado destroyed a hog barn and damaged trees, according to the National Weather Service.