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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 11:27:52 PM (CDT) on Sunday, September 20, 2009 .
The magnitude 1.2 event occurred 4 km (3 miles) E (79 degrees) of Chickamauga, GA .
The hypocentral depth is 21 km (13 miles).


Magnitude 1.2 - duration magnitude (Md)
Time Sunday, September 20, 2009 at 11:27:52 PM (CDT)
Monday, September 21, 2009 at 4:27:52 (UTC)
Distance from Chickamauga, GA - 4 km (3 miles) E (79 degrees)
Fort Oglethorpe, GA - 8 km (5 miles) S (171 degrees)
Fairview, GA - 8 km (5 miles) SSE (153 degrees)
Chattanooga, TN - 19 km (12 miles) SSE (162 degrees)
Coordinates 34 deg. 52.7 min. N (34.879N), 85 deg. 14.6 min. W ( 85.243W)
Depth 21.3 km (13.2 miles)
Quality Poor
Location Quality Parameters Nst= 4, Nph= 8, Dmin=14 km, Rmss=0.06 sec, Erho=8 km, Erzz=5.4 km, Gp=190.8 degrees
Event ID# sehnw0921a
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