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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 4:39:30 PM (PST) on Monday, December 3, 2018.
The magnitude 2.0 event occurred 6 km (4 miles) W of Cobb, CA.
The hypocentral depth is 2 km ( 1 mile).



Magnitude 2.0 - duration magnitude (Md)
Time Monday, December 3, 2018 at 4:39:30 PM (PST)
Tuesday, December 4, 2018 at 0:39:30 (UTC)
Distance from Cobb, CA - 6 km (4 miles) W (277 degrees)
The Geysers, CA - 7 km (4 miles) NNW (331 degrees)
Kelseyville, CA - 17 km (11 miles) SSE (167 degrees)
Middletown, CA - 18 km (11 miles) WNW (299 degrees)
Lower Lake, CA - 18 km (11 miles) WSW (240 degrees)
Coordinates 38 deg. 49.7 min. N (38.829N), 122 deg. 47.6 min. W (122.793W)
Depth 1.67 km (1.0 miles)
Quality Excellent
Location Quality Parameters Nst=44, Nph=46, Dmin=1.1 km, Rmss=0.07 sec, Erho=0.16 km, Erzz=0.21 km, Gp=40 degrees
Event ID# nc73118901
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