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© USGS
A 4.7-magnitude earthquake struck central Arkansas just after 11 p.m. Sunday (12 a.m. ET Monday), the United States Geological Survey said. There were no immediate reports of damage or injuries. The quake's epicenter was 37 miles from Little Rock, Arkansas, USGS said. CNN affiliate KARK received calls from a number of viewers who reported feeling the impact of the quake and seeing items on their walls shake.

From USGS:

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