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== PRELIMINARY EARTHQUAKE REPORT ==

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



Version #0: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 5:05:02 PM (PDT) on Thursday, May 21, 2020.
The magnitude 1.8 event occurred 13 km (8 miles) NNW of Pittsburg, CA.
The hypocentral depth is 21 km (13 miles).



Magnitude 1.8 - duration magnitude (Md)
Time Thursday, May 21, 2020 at 5:05:02 PM (PDT)
Friday, May 22, 2020 at 0:05:02 (UTC)
Distance from Pittsburg, CA - 13 km (8 miles) NNW (348 degrees)
Bay Point, CA - 14 km (8 miles) NNE (17 degrees)
Suisun, CA - 15 km (9 miles) SE (134 degrees)
Fairfield, CA - 16 km (10 miles) SE (137 degrees)
Antioch, CA - 18 km (11 miles) NNW (328 degrees)
Coordinates 38 deg. 8.7 min. N (38.145N), 121 deg. 55.0 min. W (121.916W)
Depth 21.06 km (13.1 miles)
Quality Fair
Location Quality Parameters Nst=19, Nph=19, Dmin=15.8 km, Rmss=0.35 sec, Erho=1.87 km, Erzz=0.68 km, Gp=106 degrees
Event ID# nc73392641
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