Severe storms and reported tornadoes swept across Oklahoma early Sunday, causing injuries and widespread power outages, authorities said.

The storm's devastating impact also included damage in the Oklahoma City area, where at least six people were transported to hospitals with non-life-threatening injuries, Oklahoma City police Capt. Valerie Littlejohn said.

Damage included downed power lines, gas lines, trees and traffic signals and signs, Littlejohn said. Local television reports showed overturned cars, downed trees and power lines, and damaged homes. Flooding shut down part of a highway in the area, and at least one home was damaged by a tornado near Tinker Air Force Base in Oklahoma City, CBS News affiliate KWTV reported.

Nearly 95,000 customers in the state were without power, according to PowerOutage.us.

The National Weather Service issued a tornado warning for parts of Oklahoma and Texas Sunday morning that was set to expire at 9 a.m. Central Time. A social media post from the agency's Norman, Oklahoma office reported a severe thunderstorm with a tornado moving through eastern Oklahoma City toward Midwest City and Tinker Air Force Base just before 1:30 a.m.

The post warned: “If you find yourself in the way of this storm, take cover immediately!”