Liberal, KS

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Friday

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Saturday

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Tuesday

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Earthquake Magnitude Upgraded

Joe Denoyer - September 8, 2016 8:36 am

U.S. Geological Survey researchers say they’re upgrading the strength of an Oklahoma earthquake that struck over the weekend to a 5.8 magnitude, making it the most powerful earthquake ever recorded in the state.

USGS research geophysicist Daniel McNamara said Wednesday the previous strongest recorded quake in Oklahoma – a 5.6-magnitude temblor in 2011 – also is being upgraded to a 5.7-magnitude quake.

Saturday’s earthquake centered near the north-central town of Pawnee damaged more than a dozen buildings and left one man with a minor head injury after a fireplace collapsed.

McNamara says the volume of injected wastewater from oil and gas activity likely played a role.

He says Oklahoma’s two earthquakes this year greater than magnitude 5.0 will increase the likelihood of larger quakes in the future.

 

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