By james art 
Among the many injured, 11 people required hospital treatment, authorities said.
Much of the damage was reported in and around the state capital, Oklahoma City, near the center of the state, but was scattered elsewhere in the state.
Early morning storms prompted tornado warnings that extended south to the Arkansas state line. Heavy rains caused flash flooding in some areas and one house fire was reported caused by lightning.
More than 99,000 homes and businesses in Oklahoma were without power during the overnight storms. By late Sunday afternoon, that number had been reduced to about 24,000. No deaths were reported.
Richard Thompson, forecast chief for the National Weather Service’s Oklahoma Storm Prediction Center, said he believed six or more tornadoes hit the state overnight. Meanwhile, forecasters warned state residents to brace for more heavy rain and possible severe weather through Monday.
“We’re not done with it yet,” he said.
Oklahoma City Fire Department spokesman Scott Douglas told The Associated Press that heavy rain and the continued threat of tornadoes in the early morning darkness were complicating early search and rescue efforts. He described the first sweep of the hard-hit areas at around 1.30am.
“It was raining heavily. We were trying to clear the area with another possibility of a tornado passing through,” he said. “So that was on our minds as well.”
Emergency workers had to free two people from the overturned mobile home, including a woman injured when an air conditioner fell on her leg, Mr. Douglas said.
The extent of the damage became clear as day broke. Local television footage showed downed power lines, peeling walls from houses, overturned vehicles and streets littered with debris.
Oklahoma Southern Heart Hospital also suffered damage, state health officials said.