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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 12:24:28 PM (PDT) on Saturday, May 4, 2013.
The magnitude 1.8 event occurred 5 km (3 miles) NE (34 degrees) of The Geysers, CA.
The hypocentral depth is 3 km ( 2 miles).



Magnitude 1.8 - duration magnitude (Md)
Time Saturday, May 4, 2013 at 12:24:28 PM (PDT)
Saturday, May 4, 2013 at 19:24:28 (UTC)
Distance from The Geysers, CA - 5 km (3 miles) NE (34 degrees)
Kelseyville, CA - 17 km (10 miles) SSE (161 degrees)
Lower Lake, CA - 17 km (10 miles) WSW (240 degrees)
Santa Rosa, CA - 44 km (28 miles) N (353 degrees)
Coordinates 38 deg. 50.1 min. N (38.836N), 122 deg. 46.5 min. W (122.775W)
Depth 2.6 km (1.6 miles)
Quality Excellent
Location Quality Parameters Nst= 36, Nph= 36, Dmin=1 km, Rmss=0.07 sec, Erho=0.2 km, Erzz=0.3 km, Gp=43.2 degrees
Event ID# nc71985361
Additional Information map || waveforms
   Waveforms
NCSS First Motion Mechanism 1

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