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Wednesday, July 20, 2011

Arkansas Earthquake last night

2.1 Md - ARKANSAS
Preliminary Earthquake Report Magnitude 2.1 Md
Date-Time 19 Jul 2011 23:43:25 UTC
19 Jul 2011 18:43:25 near epicenter
19 Jul 2011 17:43:25 standard time in your timezone

Location 35.349N 92.672W
Depth 9 km
Distances 21 km (13 miles) N (353 degrees) of Plumerville, AR
22 km (14 miles) NNE (16 degrees) of Morrilton, AR
23 km (14 miles) W (279 degrees) of Twin Groves, AR
75 km (47 miles) NNW (336 degrees) of Little Rock, AR
424 km (263 miles) SSW (211 degrees) of St. Louis, MO

Location Uncertainty Horizontal: 3.5 km; Vertical 6.6 km
Parameters Nph = 14; Dmin = 28.0 km; Rmss = 0.26 seconds; Gp = 176°
M-type = Md; Version = A
Event ID NM 071911d

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