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== PRELIMINARY EARTHQUAKE REPORT ==
Southeast U.S. Seismic Networks

Version #A: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.

A micro earthquake occurred at 1:30:05 AM (CST) on Saturday, December 24, 2011 .
The magnitude 2.0 event occurred 12 km (7 miles) S of Louisa, VA .
The hypocentral depth is 4 km ( 3 miles).


Magnitude 2.0 - duration magnitude (Md)
Time Saturday, December 24, 2011 at 1:30:05 AM (CST)
Saturday, December 24, 2011 at 7:30:05 (UTC)
Distance from Louisa, VA - 12 km (7 miles) S (180 degrees)
Mineral, VA - 13 km (8 miles) SW (219 degrees)
Columbia, VA - 23 km (14 miles) NE (37 degrees)
Richmond, VA - 63 km (39 miles) NW (310 degrees)
Coordinates 37 deg. 55.0 min. N (37.917N), 78 deg. 0.3 min. W ( 78.004W)
Depth 4.2 km (2.6 miles)
Quality Excellent
Location Quality Parameters Nst= 15, Nph= 26, Dmin=2 km, Rmss=0.09 sec, Erho=0.6 km, Erzz=0.6 km, Gp=90 degrees
Event ID# se122411a
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