Overnight Earthquakes Rattle Area

At least a half-dozen earthquakes registering at least 2.5 on the Richter Scale shook portions of Oklahoma and Kansas overnight.

All of the quakes were  centered in northern  Oklahoma, near the Kansas border. The quakes ranged in intensity from 2.6 to 4.7.

The strongest quake was a 4.7. It was centered 8 miles Southwest of Cherokee, Oklahoma. It was felt throughout Oklahoma and Kansas, including in the Salina area. The Associated Press reports that the quake happened at 1:42 a.m.

There were no immediate reports of damage, or injuries.

National Earthquake Information Center geophysicist Randy Baldwin says Oklahoma has seen more than 20 magnitude 4 quakes this year.

The Oklahoma Geological Survey has said many recent earthquakes in the state likely were triggered by the injection of wastewater from oil and natural gas drilling operations.

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