One of the strongest earthquakes in state history startled Oklahomans Wednesday morning, rattling windows and nerves but causing no major damage or injuries.

The quake was centered eight miles southeast of Norman, south of Lake Thunderbird, near E Post Oak Road and 84th Avenue SE, Oklahoma Geological Survey research seismologist Austin Holland said. He estimated the magnitude of the 9:06 a.m. quake at 5.1 and called it a "small to moderate earthquake," while the U.S. Geological Survey put it at 4.3.

Although there were only two reported minor injuries in Oklahoma, people were caught off guard by a jolting earthquake in the land of tornadoes.

Readers of The Oklahoman reported the quake felt or sounded like "a 747 landing in the neighbors' yard," "a semi hit our house" or "my house had been hit by a trash truck." People from seven states reported to the U.S. Geological Survey that they felt the quake, including from as far away as Brentwood, Tenn.