Earthquake report

Preliminary Earthquake Report Magnitude 2.1 Md
Date-Time 20 Jul 2011 12:57:54 UTC
20 Jul 2011 07:57:54 near epicenter
20 Jul 2011 06:57:54 standard time in your timezone

Location 35.340N 92.691W
Depth 7 km
Distances 20 km (13 miles) NNW (348 degrees) of Plumerville, AR
21 km (13 miles) NNE (13 degrees) of Morrilton, AR
24 km (15 miles) W (276 degrees) of Twin Groves, AR
75 km (46 miles) NNW (334 degrees) of Little Rock, AR
425 km (264 miles) SSW (211 degrees) of St. Louis, MO

Location Uncertainty Horizontal: 3.3 km; Vertical 7.5 km
Parameters Nph = 15; Dmin = 29.0 km; Rmss = 0.16 seconds; Gp = 158°
M-type = Md; Version = A
Event ID NM 072011b