The biggest earthquakes on record in the state of Oklahoma damaged buildings and roads, and injured a handful of people to hospital.
The first earthquake, with a magnitude of 4.7, hit the city of Prague, central Oklahoma, at 3:12 a.m. ET Saturday morning.
The quake buckled highway 62 in three places and sending a boulder "the size of an SUV" tumbling onto a road in south-east Lincoln County, The Guardian quotes Aaron Bennett of the county's emergency management division as saying.
That was followed at 11:53 p.m. ET Saturday by a 5.6-magnitude quake that struck four miles east of Sparks in Lincoln County, CNN reports.
That earthquake was felt as far away as Texas and Tennessee.
"I heard stuff rattling. Mirrors were shaking," CNN quotes Noel Kennedy, a resident of Garland, Texas, 200 miles away in, as saying.
Football players and a crowd of 58,895 spectators watching a major college match at the Boone Pickens Stadium in Stillwater also felt the ground shake.
"Everybody was looking around and no one had any idea," The Associated Press quoted Oklahoma State quarterback Brandon Weeden as saying. "We thought the people above us were doing something. I’ve never felt one, so that was a first."