Recent Earthquakes in California and Nevada
== 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 2:20:55 PM (PDT) on Saturday, October 4, 2025.
The magnitude 2.2 event occurred 3 km (2 miles) SE of Pacifica, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 2.2 - duration magnitude (Md) |
| Time | Saturday, October 4, 2025 at 2:20:55 PM (PDT) Saturday, October 4, 2025 at 21:20:55 (UTC) |
| Distance from |
Pacifica, CA - 3 km (2 miles) SE (141 degrees) San Bruno, CA - 6 km (4 miles) SW (228 degrees) Montara, CA - 7 km (4 miles) NE (39 degrees) Millbrae, CA - 7 km (4 miles) W (264 degrees) Hillsborough, CA - 8 km (5 miles) WNW (285 degrees) |
| Coordinates | 37 deg. 35.5 min. N (37.592N), 122 deg. 27.9 min. W (122.465W) |
| Depth | 9.12 km (5.70 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=50, Nph=48, Dmin=3.4 km, Rmss=0.08 sec, Erho=0.26 km, Erzz=0.289999992 km, Gp=83 degrees |
| Event ID# | nc75244856 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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