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== PRELIMINARY EARTHQUAKE REPORT ==

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



Version #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 2:17:28 AM (PDT) on Wednesday, October 10, 2018.
The magnitude 1.8 event occurred 9 km (6 miles) NW of The Geysers, CA.
The hypocentral depth is 2 km ( 1 mile).



Magnitude 1.8 - duration magnitude (Md)
Time Wednesday, October 10, 2018 at 2:17:28 AM (PDT)
Wednesday, October 10, 2018 at 9:17:28 (UTC)
Distance from The Geysers, CA - 9 km (6 miles) NW (317 degrees)
Cobb, CA - 9 km (6 miles) W (279 degrees)
Kelseyville, CA - 16 km (10 miles) S (176 degrees)
Cloverdale, CA - 17 km (10 miles) E (79 degrees)
Soda Bay, CA - 19 km (12 miles) S (190 degrees)
Coordinates 38 deg. 50.1 min. N (38.836N), 122 deg. 49.6 min. W (122.827W)
Depth 1.78 km (1.1 miles)
Quality Excellent
Location Quality Parameters Nst=43, Nph=44, Dmin=0.8 km, Rmss=0.04 sec, Erho=0.14 km, Erzz=0.23 km, Gp=57 degrees
Event ID# nc73095736
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