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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 3:05:54 PM (PST) on Thursday, December 6, 2018.
The magnitude 0.9 event occurred 7 km (4 miles) NW of The Geysers, CA.
The hypocentral depth is 2 km ( 1 mile).



Magnitude 0.9 - duration magnitude (Md)
Time Thursday, December 6, 2018 at 3:05:54 PM (PST)
Thursday, December 6, 2018 at 23:05:54 (UTC)
Distance from The Geysers, CA - 7 km (4 miles) NW (305 degrees)
Cobb, CA - 9 km (5 miles) W (263 degrees)
Cloverdale, CA - 17 km (11 miles) E (87 degrees)
Kelseyville, CA - 18 km (11 miles) S (175 degrees)
Middletown, CA - 19 km (12 miles) WNW (291 degrees)
Coordinates 38 deg. 48.8 min. N (38.812N), 122 deg. 49.2 min. W (122.821W)
Depth 2.15 km (1.3 miles)
Quality Excellent
Location Quality Parameters Nst=12, Nph=12, Dmin=0.9 km, Rmss=0.04 sec, Erho=0.33 km, Erzz=0.68 km, Gp=75 degrees
Event ID# nc73119721
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