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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 4:16:01 AM (PST) on Wednesday, December 5, 2018.
The magnitude 2.4 event occurred 14 km (9 miles) NNE (32 degrees) of East Quincy, CA.
The hypocentral depth is 4 km ( 2 miles).



Magnitude 2.4 - duration magnitude (Md)
Time Wednesday, December 5, 2018 at 4:16:01 AM (PST)
Wednesday, December 5, 2018 at 12:16:01 (UTC)
Distance from East Quincy, CA - 14 km (9 miles) NNE (32 degrees)
Quincy, CA - 16 km (10 miles) NE (45 degrees)
Greenville, CA - 16 km (10 miles) SE (132 degrees)
Janesville, CA - 37 km (23 miles) SW (221 degrees)
Portola, CA - 39 km (24 miles) NW (312 degrees)
Coordinates 40 deg. 2.5 min. N (40.042N), 120 deg. 48.7 min. W (120.811W)
Depth 3.61 km (2.2 miles)
Quality Good
Location Quality Parameters Nst=28, Nph=30, Dmin=6.3 km, Rmss=0.18 sec, Erho=0.42 km, Erzz=0.92 km, Gp=133 degrees
Event ID# nc73119341
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