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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 4:30:23 AM (PDT) on Tuesday, May 6, 2008.
The magnitude 1.0 event occurred 5 km (3 miles) ESE of The Geysers, CA.
The hypocentral depth is 0.5 km (0.3 miles).



Magnitude 1.0 - duration magnitude (Md)
Time Tuesday, May 6, 2008 at 4:30:23 AM (PDT)
Tuesday, May 6, 2008 at 11:30:23 (UTC)
Distance from The Geysers, CA - 5 km (3 miles) ESE (121 degrees)
Lower Lake, CA - 20 km (12 miles) SW (220 degrees)
Healdsburg, CA - 21 km (13 miles) NNE (29 degrees)
Santa Rosa, CA - 37 km (23 miles) N (355 degrees)
Coordinates 38 deg. 46.4 min. N (38.773N), 122 deg. 45.2 min. W (122.754W)
Depth 0.5 km (0.3 miles)
Quality Good
Location Quality Parameters Nst= 10, Nph= 10, Dmin=4 km, Rmss=0.02 sec, Erho=0.4 km, Erzz=1.4 km, Gp=165.6 degrees
Event ID# nc40217125
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