LANGSTON, Okla. (AP) - The U.S. Geological Survey has recorded 9 earthquakes in Oklahoma since about 9:30 p.m. Friday, the largest being a magnitude 4.0 temblor.
The U.S.G.S. says the 4.0 magnitude quake was recorded at 10:05 p.m. Friday about seven miles south of Langston.
The other quakes all ranged from magnitude 2.4 to 2.9 and all but four were recorded in the Langston area. The others were recorded near Stillwater, Choctaw, Cherokee and Crescent.
No injuries or damage have been reported.
Geologists say earthquakes of magnitude 2.5 to 3.0 are generally the smallest that are felt by humans.