Magnitude 2.8 Earthquake of OKLAHOMA 2012 February 18

2012 February 18 20:28:10 UTC: OKLAHOMA

Magnitude: 2.8

Date-Time : Saturday, February 18, 2012 at 20:28:10 UTC
Saturday, February 18, 2012 at 02:28:10 PM at epicenter

Location : 35.777°N, 96.883°W

Depth : 4 km (2.5 miles) (poorly constrained)

Region : OKLAHOMA

Distances:

a) 40 km (24 miles) SSE of Stillwater, Oklahoma

b) 50 km (31 miles) N of Shawnee, Oklahoma

c) 50 km (31 miles) ESE of Guthrie, Oklahoma

d) 67 km (41 miles) ENE of OKLAHOMA CITY, Oklahoma

Location Uncertainty: horizontal +/- 7.8 km (4.8 miles); depth +/- 9.2 km (5.7 miles)

Parameters : NST= 34, Nph= 47, Dmin=4.5 km, Rmss=1.25 sec, Gp= 65°, M-type="Nuttli" surface wave magnitude (mbLg), Version=7