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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 0:59:45 AM (PST) on Monday, December 3, 2018.
The magnitude 2.2 event occurred 9 km (6 miles) NW of The Geysers, CA.
The hypocentral depth is 2 km ( 1 mile).



Magnitude 2.2 - duration magnitude (Md)
Time Monday, December 3, 2018 at 0:59:45 AM (PST)
Monday, December 3, 2018 at 8:59:45 (UTC)
Distance from The Geysers, CA - 9 km (6 miles) NW (317 degrees)
Cobb, CA - 9 km (6 miles) W (281 degrees)
Kelseyville, CA - 15 km (10 miles) S (177 degrees)
Cloverdale, CA - 17 km (10 miles) ENE (77 degrees)
Soda Bay, CA - 18 km (11 miles) S (191 degrees)
Coordinates 38 deg. 50.3 min. N (38.839N), 122 deg. 49.8 min. W (122.831W)
Depth 2.03 km (1.3 miles)
Quality Excellent
Location Quality Parameters Nst=25, Nph=28, Dmin=0.4 km, Rmss=0.05 sec, Erho=0.19 km, Erzz=0.22 km, Gp=69 degrees
Event ID# nc73118576
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