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== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, National Earthquake Information Center

Version #6: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.

A micro earthquake occurred at 10:17:52 AM (CDT) on Thursday, August 27, 2009 .
The magnitude 2.7 event occurred 12 km (7 miles) SSE of Arcadia, OK .
The hypocentral depth is 5 km ( 3 miles).


Magnitude 2.7 - (unknown type)
Time Thursday, August 27, 2009 at 10:17:52 AM (CDT)
Thursday, August 27, 2009 at 15:17:52 (UTC)
Distance from Arcadia, OK - 12 km (7 miles) SSE (164 degrees)
Lake Aluma, OK - 14 km (9 miles) ENE (76 degrees)
Midwest City, OK - 16 km (10 miles) NE (36 degrees)
Coordinates 35 deg. 34.0 min. N (35.566N), 97 deg. 17.4 min. W ( 97.290W)
Depth 5 km (3.1 miles)
Quality unknown
Location Quality Parameters Nst= 6, Nph= 6, Dmin=140.9 km, Rmss=0 sec, Erho=0 km, Erzz=0 km, Gp=194.4 degrees
Event ID# us2009kvbl
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For more information, see http://earthquake.usgs.gov/research/monitoring/anss/neic/

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