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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 6:50:31 PM (CDT) on Monday, August 17, 2009 .
The magnitude 1.9 event occurred 2 km (1 miles) WSW of Ooltewah, TN .
The hypocentral depth is 11 km ( 7 miles).


Magnitude 1.9 - duration magnitude (Md)
Time Monday, August 17, 2009 at 6:50:31 PM (CDT)
Monday, August 17, 2009 at 23:50:31 (UTC)
Distance from Ooltewah, TN - 2 km (1 miles) WSW (241 degrees)
Collegedale, TN - 3 km (2 miles) WNW (296 degrees)
Harrison, TN - 7 km (5 miles) SE (136 degrees)
Chattanooga, TN - 21 km (13 miles) E (84 degrees)
Coordinates 35 deg. 3.9 min. N (35.066N), 85 deg. 4.9 min. W ( 85.082W)
Depth 11.3 km (7.0 miles)
Quality Fair
Location Quality Parameters Nst= 12, Nph= 20, Dmin=26 km, Rmss=0.12 sec, Erho=0.6 km, Erzz=3.9 km, Gp=111.6 degrees
Event ID# sehnw0817b
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