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== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California



Version #668701: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 6:01:06 AM (PST) on Thursday, December 6, 2018.
The magnitude 1.8 event occurred 8 km (5 miles) NNE (33 degrees) of East Quincy, CA.
The hypocentral depth is 4 km ( 2 miles).



Magnitude 1.8 - local magnitude (Ml)
Time Thursday, December 6, 2018 at 6:01:06 AM (PST)
Thursday, December 6, 2018 at 14:01:06 (UTC)
Distance from East Quincy, CA - 8 km (5 miles) NNE (33 degrees)
Quincy, CA - 10 km (6 miles) NE (54 degrees)
Greenville, CA - 19 km (12 miles) SSE (152 degrees)
Portola, CA - 38 km (24 miles) WNW (302 degrees)
Janesville, CA - 44 km (27 miles) SW (219 degrees)
Coordinates 39 deg. 59.5 min. N (39.991N), 120 deg. 50.9 min. W (120.849W)
Depth 4.09 km (2.5 miles)
Quality Fair
Location Quality Parameters Nst=10, Nph=15, Dmin=6.7 km, Rmss=0.11 sec, Erho=2.7 km, Erzz=1.25 km, Gp=178.72 degrees
Event ID# nc73119571
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