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== PRELIMINARY EARTHQUAKE REPORT ==

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



Version #4: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 11:23:20 PM (PST) on Tuesday, February 11, 2020.
The magnitude 1.6 event occurred 25 km (15 miles) NE (49 degrees) of Greenfield, CA.
The hypocentral depth is 2 km ( 2 miles).



Magnitude 1.6 - duration magnitude (Md)
Time Tuesday, February 11, 2020 at 11:23:20 PM (PST)
Wednesday, February 12, 2020 at 7:23:20 (UTC)
Distance from Greenfield, CA - 25 km (15 miles) NE (49 degrees)
Soledad, CA - 27 km (17 miles) E (80 degrees)
King City, CA - 30 km (18 miles) NNE (17 degrees)
Gonzales, CA - 37 km (23 miles) E (97 degrees)
Chualar, CA - 45 km (28 miles) ESE (105 degrees)
Coordinates 36 deg. 28.0 min. N (36.466N), 121 deg. 2.0 min. W (121.033W)
Depth 2.48 km (1.5 miles)
Quality Good
Location Quality Parameters Nst=25, Nph=26, Dmin=2.5 km, Rmss=0.09 sec, Erho=0.31 km, Erzz=0.38 km, Gp=94 degrees
Event ID# nc73340035
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