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== PRELIMINARY EARTHQUAKE REPORT ==

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



Version #19: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A minor earthquake occurred at 7:33:42 PM (PST) on Wednesday, February 12, 2020.
The magnitude 3.7 event occurred 16 km (10 miles) SSE of Ridgemark, CA.
The hypocentral depth is 9 km ( 5 miles).



Magnitude 3.7 - moment magnitude (Mw)
Time Wednesday, February 12, 2020 at 7:33:42 PM (PST)
Thursday, February 13, 2020 at 3:33:42 (UTC)
Distance from Ridgemark, CA - 16 km (10 miles) SSE (152 degrees)
Hollister, CA - 20 km (13 miles) SSE (150 degrees)
Chualar, CA - 25 km (15 miles) ENE (58 degrees)
Gonzales, CA - 25 km (15 miles) NE (35 degrees)
San Juan Bautista, CA - 29 km (18 miles) SE (127 degrees)
Coordinates 36 deg. 41.3 min. N (36.689N), 121 deg. 17.0 min. W (121.283W)
Depth 8.55 km (5.3 miles)
Quality Good
Location Quality Parameters Nst=72, Nph=85, Dmin=2.8 km, Rmss=0.17 sec, Erho=0.23 km, Erzz=0.59 km, Gp=44 degrees
Event ID# nc73340375
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