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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 1:40:34 PM (PST) on Thursday, December 6, 2018.
The magnitude 1.4 event occurred 22 km (14 miles) SW of Patterson, CA.
The hypocentral depth is 2 km ( 1 mile).



Magnitude 1.4 - duration magnitude (Md)
Time Thursday, December 6, 2018 at 1:40:34 PM (PST)
Thursday, December 6, 2018 at 21:40:34 (UTC)
Distance from Patterson, CA - 22 km (14 miles) SW (225 degrees)
Newman, CA - 25 km (16 miles) W (274 degrees)
Gustine, CA - 28 km (18 miles) WNW (286 degrees)
San Martin, CA - 38 km (24 miles) NE (45 degrees)
Morgan Hill, CA - 38 km (24 miles) NE (54 degrees)
Coordinates 37 deg. 19.8 min. N (37.329N), 121 deg. 18.3 min. W (121.306W)
Depth 1.65 km (1.0 miles)
Quality Good
Location Quality Parameters Nst=18, Nph=20, Dmin=3.3 km, Rmss=0.09 sec, Erho=0.38 km, Erzz=0.53 km, Gp=155 degrees
Event ID# nc73119686
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