M3.1 - OKLAHOMA

Preliminary Earthquake Report
Magnitude	3.1
Date-Time	18 Sep 2015 23:51:56 UTC 18 Sep 2015 18:51:56 near epicenter 18 Sep 2015 17:51:56 standard time in your timezone
Location	36.811N 97.808W
Depth	1 km
Distances	6 km (3 mi) W of Medford, Oklahoma 46 km (28 mi) N of Enid, Oklahoma 65 km (40 mi) W of Ponca City, Oklahoma 74 km (45 mi) WSW of Arkansas City, Kansas 151 km (93 mi) N of Oklahoma City, Oklahoma
Location Uncertainty	Horizontal: 1.4 km; Vertical 7.8 km
Parameters	Nph = 50; Dmin = 6.7 km; Rmss = 0.43 seconds; Gp = 46° Version =
Event ID	us 20003ln7

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

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