The U.S. Geological Survey says a 2.7 magnitude earthquake hit Blount County, near Louisville on Monday night.
It happened at 10:42 p.m. Monday.
The center of the quake was about 2.5 miles west of Louisville.
The U.S.G.S. reports the earthquake had a depth of 3.3 kilometers, which is relatively close to the surface.
Jeff Munsey, a seismologist with the Tennessee Valley Authority, said the earthquake was unusually shallow for East Tennessee. He said most earthquakes in this area range from five to 10 miles in depth.
"There are faults you can see at the surface, but we really don't think that the earthquakes are related to those faults," he said. "They're very old faults. They don't really move anymore."
East Tennessee usually has two to three earthquakes a year that can be felt like the one Monday night, Munsey said, but there are actually about 1,500 a year that can be detected.
"I don't think there's anything to be especially concerned about," Munsey said, "but you can definitely expect to feel and hear about more earthquakes in the future in East Tennessee."
A number of WBIR Facebook commenters said they felt a small rumbling and some vibrations.
Amy Greene lives in West Knox County about 3.5 miles from the epicenter and said she felt the shock from the earthquake as she was getting into bed Monday night.
"I thought to myself, what is that?" Greene said. "It lasted about three or four seconds maybe, and I couldn't figure out what it was so I sat there trying to figure it out."
The earthquake didn't do any damage to her neighborhood, but it did cause her windows to shake for a few seconds.
"A lot of different ideas ran through my mind and one of them was an earthquake," she said. "And I thought, could we really have an earthquake here?"