Oklahoma Rattled by Four Saturday Morning Earthquakes

A magnitude 4.6 earthquake that rattled Oklahoma on Saturday was also felt in neighboring Kansas and Missouri, the U.S. Geological Survey said.It was one of four Saturday morning earthquakes recorded in northwest Oklahoma. There were no immediate reports of injury or serious damage. The largest temblor took place at 7:16 a.m., a few miles outside Covington, a town of about 500 about an hour north of Oklahoma City. But the USGS website showed the quake was felt in Kansas City, Missouri, some 300 miles away, as well as in Joplin, Missouri, and Wichita, Kansas.Saturday's quakes were in the same area where four others struck Friday, including one with a reading of magnitude 3.7.The threshold for damage usually starts at 4.0. The strongest earthquake on record in Oklahoma was a magnitude 5.8 recorded near Pawnee in September 2016.Many of the thousands of earthquakes in Oklahoma in recent years have been linked to the underground injection of wastewater from oil and natural gas production. State regulators have directed several producers to close or reduce volumes in some wells.Associated Press   Continue reading...

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