Three earthquakes shook Oklahoma on Thursday, the U.S. Geological Survey reported.
The first earthquake, measured at 3.1 magnitude, hit shortly after 12:10 a.m. with an epicenter 13 miles southeast of Medford. The second, measured at 3.2 magnitude, was reported about 9:40 a.m. with an epicenter one mile south of Langston.
The third, meaured at 3.3 magnitude, struck about 5:40 p.m. about 12 miles north, northeast of Enid.
Since early Wednesday, the U.S. Geological Survey has reported seven earthquakes in Oklahoma measured 3.1 magnitude or higher.
No immediate damage was reported.