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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 2:38:48 AM (PST) on Wednesday, December 5, 2018.
The magnitude 1.1 event occurred 6 km (4 miles) WNW of Cobb, CA.
The hypocentral depth is 2 km ( 1 mile).



Magnitude 1.1 - duration magnitude (Md)
Time Wednesday, December 5, 2018 at 2:38:48 AM (PST)
Wednesday, December 5, 2018 at 10:38:48 (UTC)
Distance from Cobb, CA - 6 km (4 miles) WNW (284 degrees)
The Geysers, CA - 7 km (5 miles) NNW (334 degrees)
Kelseyville, CA - 16 km (10 miles) SSE (166 degrees)
Soda Bay, CA - 18 km (11 miles) S (181 degrees)
Middletown, CA - 18 km (11 miles) WNW (301 degrees)
Coordinates 38 deg. 50.2 min. N (38.836N), 122 deg. 47.6 min. W (122.793W)
Depth 2.15 km (1.3 miles)
Quality Excellent
Location Quality Parameters Nst=10, Nph=10, Dmin=0.3 km, Rmss=0.03 sec, Erho=0.41 km, Erzz=0.97 km, Gp=76 degrees
Event ID# nc73119316
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