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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 6:21:54 PM (PST) on Tuesday, February 13, 2018.
The magnitude 1.5 event occurred 18 km (11 miles) NE (46 degrees) of Upper Lake, CA.
The hypocentral depth is 7 km ( 4 miles).



Magnitude 1.5 - duration magnitude (Md)
Time Tuesday, February 13, 2018 at 6:21:54 PM (PST)
Wednesday, February 14, 2018 at 2:21:54 (UTC)
Distance from Upper Lake, CA - 18 km (11 miles) NE (46 degrees)
Nice, CA - 19 km (12 miles) NNE (24 degrees)
North Lakeport, CA - 24 km (15 miles) NNE (31 degrees)
Lakeport, CA - 29 km (18 miles) NNE (28 degrees)
Clearlake Oaks, CA - 29 km (18 miles) NNW (345 degrees)
Coordinates 39 deg. 16.6 min. N (39.276N), 122 deg. 45.5 min. W (122.759W)
Depth 6.55 km (4.1 miles)
Quality Fair
Location Quality Parameters Nst=9, Nph=9, Dmin=14.0 km, Rmss=0.09 sec, Erho=0.41 km, Erzz=2.18 km, Gp=68 degrees
Event ID# nc72969146
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