Residents of Guthrie Oklahoma were shaken up Sunday when a 4.0 magnitude earthquake struck around 10:25 p.m. local time.

The quake was centered around 3 miles south southwest of Guthrie, 25 miles north of Oklahoma City.

The U.S. Geological Survey says that the quake was the eleventh to his the state on Sunday.

The quake comes on the heels of a report in Geophysical Reseach Letters that says Oklahoma could see more frequent and stronger earthquakes.

The study, which is headed by a geophysicist with the U.S. Geological Survery, says that it’s possible magnitude 6 quakes could strike the state.  The report shows 3,639 earthquakes in Oklahoma between late 2009 and 2014, an increase of 300 times previous decades.

Most struck around 3 miles underground along the Nemaha and Wilzetta fault zones.