Magnitude 4.7 - ARKANSAS

Earthquake Details

• This event has been reviewed by a seismologist.

Magnitude	4.7
Date-Time	Monday, February 28, 2011 at 05:00:50 UTC Sunday, February 27, 2011 at 11:00:50 PM at epicenter Time of Earthquake in other Time Zones
Location	35.265°N, 92.344°W
Depth	3.8 km (2.4 miles)
Region	ARKANSAS
Distances	6 km (4 miles) NE (46°) from Greenbrier, AR 7 km (4 miles) S (187°) from Guy, AR 9 km (6 miles) SE (128°) from Twin Groves, AR 22 km (14 miles) NNE (27°) from Conway, AR 59 km (37 miles) N (359°) from Little Rock, AR 418 km (260 miles) SSW (207°) from St. Louis, MO
Location Uncertainty	horizontal +/- 0.6 km (0.4 miles); depth +/- 0.7 km (0.4 miles)
Parameters	NST= 14, Nph= 20, Dmin=3 km, Rmss=0.18 sec, Gp= 68°, M-type=centroid moment magnitude (Mw), Version=B
Source	Cooperative New Madrid Seismic Network
Event ID	nm022811a