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== PRELIMINARY EARTHQUAKE REPORT ==

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



Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 3:36:15 PM (PDT) on Tuesday, August 7, 2018.
The magnitude 0.9 event occurred 7 km (4 miles) NW of The Geysers, CA.
The hypocentral depth is 1 km ( 1 mile).



Magnitude 0.9 - duration magnitude (Md)
Time Tuesday, August 7, 2018 at 3:36:15 PM (PDT)
Tuesday, August 7, 2018 at 22:36:15 (UTC)
Distance from The Geysers, CA - 7 km (4 miles) NW (320 degrees)
Cobb, CA - 7 km (5 miles) W (272 degrees)
Kelseyville, CA - 17 km (11 miles) S (171 degrees)
Cloverdale, CA - 18 km (11 miles) E (83 degrees)
Middletown, CA - 18 km (11 miles) WNW (296 degrees)
Coordinates 38 deg. 49.5 min. N (38.824N), 122 deg. 48.4 min. W (122.807W)
Depth 1.13 km (0.7 miles)
Quality Excellent
Location Quality Parameters Nst=29, Nph=30, Dmin=2.1 km, Rmss=0.06 sec, Erho=0.18 km, Erzz=0.27 km, Gp=46 degrees
Event ID# nc73066081
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