The U.S. Geological Survey says a 3.2 magnitude quake struck just before 6 a.m. Sunday about 27 miles northeast of Oklahoma City. The Logan County Sheriff's Office says no damage was reported.
On Saturday, a 2.4 magnitude tremor was recorded at about 7 a.m. about 50 miles northeast of Oklahoma City near Sparks.
Sunday's earthquake is the sixth in the area since Thursday, when a 3.7 magnitude quake was recorded near Prague. Three more were recorded Friday.
A 5.6 magnitude quake, the strongest ever recorded in Oklahoma, shook the state Nov. 5. That quake damaged dozens of homes, buckled a highway and caused other damage.
Geologists say earthquakes with magnitudes of 2.5 to 3.0 are generally the smallest felt by humans.