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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 7:17:18 PM (CDT) on Tuesday, April 8, 2008 .
The magnitude 1.8 event occurred 5 km (3 miles) ESE of Ridgely, TN .
The hypocentral depth is 7 km ( 4 miles).


Magnitude 1.8 - duration magnitude (Md)
Time Tuesday, April 8, 2008 at 7:17:18 PM (CDT)
Wednesday, April 9, 2008 at 0:17:18 (UTC)
Distance from Ridgely, TN - 5 km (3 miles) ESE (106 degrees)
Tiptonville, TN - 15 km (9 miles) SSE (165 degrees)
Hornbeak, TN - 15 km (9 miles) SW (233 degrees)
Jackson, TN - 90 km (56 miles) NW (322 degrees)
Coordinates 36 deg. 15.0 min. N (36.250N), 89 deg. 25.8 min. W ( 89.430W)
Depth 6.6 km (4.1 miles)
Quality Excellent
Location Quality Parameters Nst= 13, Nph= 21, Dmin=2.1 km, Rmss=0.04 sec, Erho=0.6 km, Erzz=1.6 km, Gp=54 degrees
Event ID# nmhwb0409a
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For more information, see http://folkworm.ceri.memphis.edu/

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