"Earthquake Rattles Oklahoma; One Of Strongest Recorded In State"

"An earthquake struck northern Oklahoma early Saturday morning, rattling houses and waking residents in the region around Pawnee, about 74 miles north of Oklahoma City. Preliminary measurements show the quake had a magnitude of 5.6 — believed to be one of the strongest in state history.

The quake was felt in five states, according to the U.S. Geological Survey: Oklahoma, Kansas, Missouri, Arkansas and Texas. It struck just after 7 a.m. local time, at a depth of 6 kilometers (3.7 miles).

The epicenter was around 8 miles northwest of Pawnee, a town of less than 3,000 people. Shortly after the large quake hit, at least four additional temblors struck the same area, with the strongest having a magnitude of 3.6; all of them were shallower than the first quake."

Bill Chappell reports for NPR September 3, 2016.