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== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California



Version #1: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 11:46:29 PM (PDT) on Sunday, May 4, 2008.
The magnitude 1.7 event occurred 4 km (2 miles) N of The Geysers, CA.
The hypocentral depth is 2 km ( 1 mile).



Magnitude 1.7 - duration magnitude (Md)
Time Sunday, May 4, 2008 at 11:46:29 PM (PDT)
Monday, May 5, 2008 at 6:46:29 (UTC)
Distance from The Geysers, CA - 4 km (2 miles) N (359 degrees)
Kelseyville, CA - 16 km (10 miles) S (171 degrees)
Cloverdale, CA - 18 km (11 miles) E (80 degrees)
Santa Rosa, CA - 44 km (28 miles) N (349 degrees)
Coordinates 38 deg. 49.9 min. N (38.832N), 122 deg. 48.5 min. W (122.808W)
Depth 2.1 km (1.3 miles)
Quality Good
Location Quality Parameters Nst= 18, Nph= 18, Dmin=3 km, Rmss=0.05 sec, Erho=0.3 km, Erzz=0.4 km, Gp=118.8 degrees
Event ID# nc40217053
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