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== PRELIMINARY EARTHQUAKE REPORT ==

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



Version #668800: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 1:04:07 PM (PST) on Thursday, December 6, 2018.
The magnitude 1.8 event occurred 13 km (8 miles) NE (37 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 1:04:07 PM (PST)
Thursday, December 6, 2018 at 21:04:07 (UTC)
Distance from East Quincy, CA - 13 km (8 miles) NE (37 degrees)
Quincy, CA - 16 km (10 miles) NE (49 degrees)
Greenville, CA - 17 km (11 miles) SE (134 degrees)
Portola, CA - 38 km (23 miles) NW (311 degrees)
Janesville, CA - 38 km (24 miles) SW (219 degrees)
Coordinates 40 deg. 1.8 min. N (40.030N), 120 deg. 48.3 min. W (120.805W)
Depth 4.06 km (2.5 miles)
Quality Fair
Location Quality Parameters Nst=7, Nph=12, Dmin=8.7 km, Rmss=0.11 sec, Erho=2.04 km, Erzz=31.61 km, Gp=164.01 degrees
Event ID# nc73119676
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