A 5.6-magnitude earthquake centered near the city of Pawnee rattled the state just after 8 a.m. Saturday, tying a record set in 2011 for the strongest such tremor in Oklahoma history, according to the National Weather Service. The United States Geological Survey recorded subsequent earthquakes of magnitudes 3.6, 3.4 and 2.9. The morning earthquake was felt as far away as Sioux City, Iowa, and Austin, Tex., according to the European-Mediterranean Seismological Center. cannot currently conclude whether or not this particular earthquake was caused by industrial-related, human activities,” it said. Oklahoma has thousands of wastewater disposal wells across the state.

Source: New York Times September 03, 2016 15:45 UTC