Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE REPORT ==

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


Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 8:47:56 AM (PDT) on Sunday, July 16, 2023.
The magnitude 1.2 event occurred 2 km (1 miles) E (95 degrees) of Pacifica, CA.
The hypocentral depth is 8 km ( 5 miles).


Magnitude 1.2 - duration magnitude (Md)
Time Sunday, July 16, 2023 at 8:47:56 AM (PDT)
Sunday, July 16, 2023 at 15:47:56 (UTC)
Distance from Pacifica, CA - 2 km (1 miles) E (95 degrees)
San Bruno, CA - 5 km (3 miles) WSW (247 degrees)
Colma, CA - 7 km (4 miles) S (183 degrees)
South San Francisco, CA - 7 km (4 miles) SW (227 degrees)
Millbrae, CA - 7 km (4 miles) WNW (283 degrees)
Coordinates 37 deg. 36.7 min. N (37.612N), 122 deg. 27.9 min. W (122.465W)
Depth 7.87 km (4.9 miles)
Quality Good
Location Quality Parameters Nst=18, Nph=25, Dmin=2.9 km, Rmss=0.05 sec, Erho=0.26 km, Erzz=0.32 km, Gp=113 degrees
Event ID# nc73913676
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