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 6:24:37 PM (PDT) on Thursday, July 24, 2025.
The magnitude 1.0 event occurred 4 km (3 miles) SE of Pacifica, CA.
The hypocentral depth is 7 km ( 5 miles).


Magnitude 1.0 - duration magnitude (Md)
Time Thursday, July 24, 2025 at 6:24:37 PM (PDT)
Friday, July 25, 2025 at 1:24:37 (UTC)
Distance from Pacifica, CA - 4 km (3 miles) SE (137 degrees)
San Bruno, CA - 6 km (4 miles) SW (217 degrees)
Millbrae, CA - 6 km (4 miles) WSW (257 degrees)
Hillsborough, CA - 7 km (4 miles) W (281 degrees)
Montara, CA - 7 km (5 miles) NE (48 degrees)
Coordinates 37 deg. 35.2 min. N (37.586N), 122 deg. 27.2 min. W (122.454W)
Depth 7.33 km (4.60 miles)
Quality Excellent
Location Quality Parameters Nst=13, Nph=19, Dmin=3.0 km, Rmss=0.06 sec, Erho=0.23 km, Erzz=0.4 km, Gp=88 degrees
Event ID# nc75214687
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For more information, see https://earthquake.usgs.gov

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