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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 11:30:56 PM (CDT) on Sunday, August 16, 2009 .
The magnitude 1.9 event occurred 10 km (6 miles) NE (43 degrees) of Manila, AR .
The hypocentral depth is 17 km (11 miles).


Magnitude 1.9 - duration magnitude (Md)
Time Sunday, August 16, 2009 at 11:30:56 PM (CDT)
Monday, August 17, 2009 at 4:30:56 (UTC)
Distance from Manila, AR - 10 km (6 miles) NE (43 degrees)
Dell, AR - 11 km (7 miles) NNW (335 degrees)
Gosnell, AR - 11 km (7 miles) W (262 degrees)
Jonesboro, AR - 56 km (35 miles) ENE (78 degrees)
Coordinates 35 deg. 56.7 min. N (35.945N), 90 deg. 5.6 min. W ( 90.093W)
Depth 17.4 km (10.8 miles)
Quality Good
Location Quality Parameters Nst= 23, Nph= 37, Dmin=8 km, Rmss=0.12 sec, Erho=0.9 km, Erzz=1 km, Gp=118.8 degrees
Event ID# nmhnw0817a
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