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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 4:53:37 PM (PST) on Thursday, December 6, 2018.
The magnitude 2.2 event occurred 20 km (12 miles) SSE of Ridgemark, CA.
The hypocentral depth is 9 km ( 6 miles).



Magnitude 2.2 - duration magnitude (Md)
Time Thursday, December 6, 2018 at 4:53:37 PM (PST)
Friday, December 7, 2018 at 0:53:37 (UTC)
Distance from Ridgemark, CA - 20 km (12 miles) SSE (154 degrees)
Gonzales, CA - 23 km (14 miles) NE (43 degrees)
Chualar, CA - 24 km (15 miles) ENE (67 degrees)
Hollister, CA - 24 km (15 miles) SSE (152 degrees)
Soledad, CA - 26 km (16 miles) N (11 degrees)
Coordinates 36 deg. 39.2 min. N (36.654N), 121 deg. 16.3 min. W (121.271W)
Depth 9.32 km (5.8 miles)
Quality Excellent
Location Quality Parameters Nst=46, Nph=48, Dmin=6.2 km, Rmss=0.07 sec, Erho=0.13 km, Erzz=0.3 km, Gp=66 degrees
Event ID# nc73119746
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