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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 8:32:04 AM (CDT) on Wednesday, October 21, 2009 .
The magnitude 1.8 event occurred 11 km (7 miles) SW of Caruthersville, MO .
The hypocentral depth is 6 km ( 4 miles).


Magnitude 1.8 - duration magnitude (Md)
Time Wednesday, October 21, 2009 at 8:32:04 AM (CDT)
Wednesday, October 21, 2009 at 13:32:04 (UTC)
Distance from Caruthersville, MO - 11 km (7 miles) SW (223 degrees)
Hayti, MO - 12 km (8 miles) S (176 degrees)
Pascola, MO - 18 km (11 miles) SSE (154 degrees)
Jonesboro, AR - 92 km (57 miles) ENE (70 degrees)
Coordinates 36 deg. 7.3 min. N (36.122N), 89 deg. 44.3 min. W ( 89.739W)
Depth 5.6 km (3.5 miles)
Quality Good
Location Quality Parameters Nst= 19, Nph= 29, Dmin=3 km, Rmss=0.05 sec, Erho=0.5 km, Erzz=0.9 km, Gp=108 degrees
Event ID# nmhnw1021a
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For more information, see http://folkworm.ceri.memphis.edu/

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