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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 10:45:44 PM (PDT) on Tuesday, July 28, 2020.
The magnitude 1.5 event occurred 26 km (16 miles) ENE (60 degrees) of Greenfield, CA.
The hypocentral depth is 1 km (0.5 miles).



Magnitude 1.5 - duration magnitude (Md)
Time Tuesday, July 28, 2020 at 10:45:44 PM (PDT)
Wednesday, July 29, 2020 at 5:45:44 (UTC)
Distance from Greenfield, CA - 26 km (16 miles) ENE (60 degrees)
King City, CA - 28 km (17 miles) NNE (25 degrees)
Soledad, CA - 29 km (18 miles) E (87 degrees)
Gonzales, CA - 41 km (25 miles) E (101 degrees)
Chualar, CA - 49 km (30 miles) ESE (108 degrees)
Coordinates 36 deg. 26.2 min. N (36.437N), 120 deg. 59.8 min. W (120.997W)
Depth 0.85 km (0.5 miles)
Quality Good
Location Quality Parameters Nst=22, Nph=25, Dmin=2.4 km, Rmss=0.07 sec, Erho=0.24 km, Erzz=0.51 km, Gp=103 degrees
Event ID# nc73435186
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