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== PRELIMINARY EARTHQUAKE REPORT ==
Cooperative New Madrid Seismic Network

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

A micro earthquake occurred at 12:11:10 PM (CDT) on Monday, July 20, 2009 .
The magnitude 1.7 event occurred 12 km (7 miles) SSE of Ridgely, TN .
The hypocentral depth is 8 km ( 5 miles).


Magnitude 1.7 - duration magnitude (Md)
Time Monday, July 20, 2009 at 12:11:10 PM (CDT)
Monday, July 20, 2009 at 17:11:10 (UTC)
Distance from Ridgely, TN - 12 km (7 miles) SSE (151 degrees)
Dyersburg, TN - 16 km (10 miles) NNW (347 degrees)
Newbern, TN - 16 km (10 miles) WNW (295 degrees)
Jackson, TN - 83 km (52 miles) NW (319 degrees)
Coordinates 36 deg. 10.4 min. N (36.173N), 89 deg. 25.5 min. W ( 89.425W)
Depth 7.7 km (4.8 miles)
Quality Excellent
Location Quality Parameters Nst= 11, Nph= 17, Dmin=6 km, Rmss=0.02 sec, Erho=0.4 km, Erzz=1.6 km, Gp=82.8 degrees
Event ID# nmhnw0720b
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For more information, see http://folkworm.ceri.memphis.edu/

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