M4.0 - OKLAHOMA

Preliminary Earthquake Report
Magnitude	4.0
Date-Time	8 Dec 2015 00:08:31 UTC 7 Dec 2015 18:08:31 near epicenter 7 Dec 2015 18:08:31 standard time in your timezone
Location	36.926N 97.800W
Depth	3 km
Distances	14 km (8 mi) NNW of Medford, Oklahoma 59 km (36 mi) N of Enid, Oklahoma 68 km (42 mi) WNW of Ponca City, Oklahoma 69 km (42 mi) WSW of Arkansas City, Kansas 163 km (101 mi) N of Oklahoma City, Oklahoma
Location Uncertainty	Horizontal: 1.2 km; Vertical 7.2 km
Parameters	Nph = 46; Dmin = 9.8 km; Rmss = 0.43 seconds; Gp = 37° Version =
Event ID	us 100044ya

For updates, maps, and technical information, see: Event Page or USGS Earthquake Hazards Program

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