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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 6:48:45 PM (PDT) on Monday, July 9, 2018.
The magnitude 1.7 event occurred 16 km (10 miles) SSE of Ridgemark, CA.
The hypocentral depth is 3 km ( 2 miles).



Magnitude 1.7 - duration magnitude (Md)
Time Monday, July 9, 2018 at 6:48:45 PM (PDT)
Tuesday, July 10, 2018 at 1:48:45 (UTC)
Distance from Ridgemark, CA - 16 km (10 miles) SSE (160 degrees)
Hollister, CA - 20 km (13 miles) SSE (156 degrees)
Chualar, CA - 23 km (14 miles) ENE (57 degrees)
Gonzales, CA - 23 km (14 miles) NNE (33 degrees)
San Juan Bautista, CA - 28 km (17 miles) SE (132 degrees)
Coordinates 36 deg. 40.8 min. N (36.679N), 121 deg. 18.3 min. W (121.306W)
Depth 3.33 km (2.1 miles)
Quality Good
Location Quality Parameters Nst=26, Nph=31, Dmin=7.6 km, Rmss=0.05 sec, Erho=0.23 km, Erzz=1.01 km, Gp=89 degrees
Event ID# nc73042466
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