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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 9:38:35 AM (PDT) on Friday, August 10, 2018.
The magnitude 0.9 event occurred 3 km (2 miles) SE of The Geysers, CA.
The hypocentral depth is 1 km ( 1 mile).



Magnitude 0.9 - duration magnitude (Md)
Time Friday, August 10, 2018 at 9:38:35 AM (PDT)
Friday, August 10, 2018 at 16:38:35 (UTC)
Distance from The Geysers, CA - 3 km (2 miles) SE (145 degrees)
Cobb, CA - 7 km (5 miles) S (191 degrees)
Middletown, CA - 11 km (7 miles) W (273 degrees)
Hidden Valley Lake, CA - 17 km (10 miles) WSW (250 degrees)
Healdsburg, CA - 20 km (12 miles) NE (35 degrees)
Coordinates 38 deg. 45.5 min. N (38.758N), 122 deg. 44.3 min. W (122.739W)
Depth 1.42 km (0.9 miles)
Quality Good
Location Quality Parameters Nst=8, Nph=8, Dmin=0.8 km, Rmss=0.01 sec, Erho=0.35 km, Erzz=0.59 km, Gp=127 degrees
Event ID# nc73067760
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