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== PRELIMINARY EARTHQUAKE REPORT ==

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



Version #0: 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 11:59:05 PM (PDT) on Thursday, August 9, 2018.
The magnitude 0.9 event occurred 2 km (1 miles) NW of The Geysers, CA.
The hypocentral depth is 3 km ( 2 miles).



Magnitude 0.9 - duration magnitude (Md)
Time Thursday, August 9, 2018 at 11:59:05 PM (PDT)
Friday, August 10, 2018 at 6:59:05 (UTC)
Distance from The Geysers, CA - 2 km (1 miles) NW (322 degrees)
Cobb, CA - 5 km (3 miles) SW (232 degrees)
Middletown, CA - 14 km (9 miles) WNW (288 degrees)
Lower Lake, CA - 19 km (12 miles) SW (227 degrees)
Hidden Valley Lake, CA - 19 km (12 miles) W (265 degrees)
Coordinates 38 deg. 47.6 min. N (38.793N), 122 deg. 46.3 min. W (122.772W)
Depth 2.56 km (1.6 miles)
Quality Good
Location Quality Parameters Nst=9, Nph=9, Dmin=2.6 km, Rmss=0.03 sec, Erho=0.44 km, Erzz=0.95 km, Gp=99 degrees
Event ID# nc73067470
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