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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 10:59:52 PM (CDT) on Monday, July 6, 2009 .
The magnitude 2.3 event occurred 9 km (5 miles) NW of Tuckahoe, VA .
The hypocentral depth is 11 km ( 7 miles).


Magnitude 2.3 - (unknown type)
Time Monday, July 6, 2009 at 10:59:52 PM (CDT)
Tuesday, July 7, 2009 at 3:59:52 (UTC)
Distance from Tuckahoe, VA - 9 km (5 miles) NW (308 degrees)
Laurel, VA - 11 km (7 miles) W (268 degrees)
Glen Allen, VA - 12 km (7 miles) WSW (256 degrees)
Richmond, VA - 18 km (11 miles) WNW (302 degrees)
Coordinates 37 deg. 38.3 min. N (37.639N), 77 deg. 38.1 min. W ( 77.635W)
Depth 10.9 km (6.8 miles)
Quality Fair
Location Quality Parameters Nst= 4, Nph= 8, Dmin=11.6 km, Rmss=0.05 sec, Erho=1.7 km, Erzz=1.3 km, Gp=129.6 degrees
Event ID# semcc0707a
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