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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 9:46:57 PM (PST) on Sunday, February 10, 2019.
The magnitude 1.6 event occurred 1 km (1 miles) NNW of The Geysers, CA.
The hypocentral depth is -1 km (-1 miles).



Magnitude 1.6 - duration magnitude (Md)
Time Sunday, February 10, 2019 at 9:46:57 PM (PST)
Monday, February 11, 2019 at 5:46:57 (UTC)
Distance from The Geysers, CA - 1 km (1 miles) NNW (327 degrees)
Cobb, CA - 5 km (3 miles) SW (221 degrees)
Middletown, CA - 13 km (8 miles) WNW (286 degrees)
Hidden Valley Lake, CA - 18 km (11 miles) W (262 degrees)
Lower Lake, CA - 19 km (12 miles) SW (224 degrees)
Coordinates 38 deg. 47.2 min. N (38.786N), 122 deg. 45.8 min. W (122.764W)
Depth -0.9 km (-0.6 miles)
Quality Excellent
Location Quality Parameters Nst=36, Nph=41, Dmin=1.7 km, Rmss=0.08 sec, Erho=0.14 km, Erzz=0.64 km, Gp=66 degrees
Event ID# nc73140690
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