earthquake / U.S. Geological Survey

A magnitude 4.4 earthquake centered in northern Oklahoma has shaken the state, with reports of it being felt hundreds of miles away. 

The U.S. Geological Survey reported Monday's quake happened at about 3:20 p.m., with the epicenter located about 9 miles east of Cherokee near the Kansas border. People reported feeling the quake in several states, including Arkansas, Kansas, Missouri, Oklahoma and Texas.

The Alfalfa County Sheriff's Office said there were no immediate reports of injuries or damage.

University of Oklahoma graduate students near Wellston, Okla., installing a seismometer to study central-Oklahoma's earthquake swarm
Joe Wertz / StateImpact Oklahoma

A series of peer-reviewed papers published June 2 in The Leading Edge detail new research on disposal well-triggered earthquakes in Oklahoma.

seismic readout
Great Beyond / Flickr

A pair of earthquakes has rattled parts of Noble County in central Oklahoma.

The U.S. Geological Survey says each of the quakes was recorded early Sunday northwest of Perry.

The first temblor was recorded shortly after 5 a.m. about 12 miles north-northwest of Perry at a depth of about three miles. The USGS says the earthquake was a magnitude 3.1.

The second quake was recorded about two hours later about seven miles northwest of Perry, also at a depth of three miles. Geologists say that quake was magnitude 2.8.

Tim Phillips /

More than a dozen small to moderate earthquakes have been recorded in Oklahoma since Friday afternoon, including one with a preliminary magnitude of 4.2 that also was felt in Kansas and Texas.

The U.S. Geological Survey reports the quake occurred at 8:21 a.m. Saturday 12 miles north of Crescent, about 45 miles north of Oklahoma City.

Residents about 270 miles north in Topeka, Kansas, and about 240 miles south in Dallas reported feeling the quake.

Logan County Sheriff's Sgt. Greg Valencia says there are no reports of damage or injury.


New federal research says small earthquakes shaking Oklahoma and southern Kansas daily are dramatically increasing the chance of bigger and dangerous quakes.

Scientists link many of these quakes to the deep underground injections of wastewater after drilling for energy in a process known as hydraulic fracturing, or fracking.

Federal records show Oklahoma has had nearly 200 quakes that people have felt since Jan. 1.

Oklahoma’s surge in earthquakes and possible links to oil and gas activity has led regulators to scrutinize permits for disposal well operators in quake-prone regions of the state.

Former Oklahoma Geological Survey seismologist Austin Holland.
Joe Wertz / StateImpact Oklahoma

Washington Post reporter Lori Montgomery traveled central Oklahoma and filed a story about Oklahoma’s earthquake swarm, an examination that included interviews from concerned residents, politicians and Sandra Ladra, who was injured in the 5.7-magnitude November 2011 earthquake and 

Tim Phillips /

A swarm of earthquakes has rattled the Medford area in northern Oklahoma, including a magnitude 4.0 quake.

The U.S. Geological Survey says the earthquake struck at 8:43 a.m. Tuesday. Its epicenter was less than one mile east of Medford, which is about 100 miles north of Oklahoma City.


No injuries or damage have been reported after a 3.6-magnitude earthquake hit northern Oklahoma on Friday morning.

The U.S. Geological Survey says the quake struck at about 6 a.m. with an epicenter 14 miles north-northwest of Enid. The earthquake had a depth of 3.1 miles.

Two other earthquakes also rumbled Friday near the same area. The USGS says two earthquakes hit shortly after 1 a.m. near Medford. Those temblors had preliminary magnitudes of 3.1 and 3.2

On Wednesday, a 4.8-magnitude earthquake struck Kansas and was widely felt in parts of Oklahoma.


seismic readout
Great Beyond / Flickr

The U.S. Geological Survey has recorded a 4.1 magnitude earthquake near Stillwater.

The USGS says the earthquake was recorded at 2:10 p.m. Sunday five miles southwest of Stillwater, about 45 miles northeast of Oklahoma City.

The Payne County Sheriff's Office and Stillwater Police Department say there are no reports of damage or injury.

The quake comes following a 3.1 magnitude earthquake recorded in the same general area at 6:55 a.m. Sunday.