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 5:24:20 PM (PST) on Wednesday, December 3, 2025.
The magnitude 0.5 event occurred 2 km (1 miles) SE of Pacifica, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 0.5 - duration magnitude (Md) |
| Time | Wednesday, December 3, 2025 at 5:24:20 PM (PST) Thursday, December 4, 2025 at 1:24:20 (UTC) |
| Distance from |
Pacifica, CA - 2 km (1 miles) SE (133 degrees) San Bruno, CA - 6 km (4 miles) SW (236 degrees) Millbrae, CA - 7 km (4 miles) W (271 degrees) Montara, CA - 8 km (5 miles) NNE (33 degrees) South San Francisco, CA - 8 km (5 miles) SW (221 degrees) |
| Coordinates | 37 deg. 36.0 min. N (37.600N), 122 deg. 28.1 min. W (122.468W) |
| Depth | 8.94 km (5.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=8, Nph=11, Dmin=3.4 km, Rmss=0.06 sec, Erho=0.48 km, Erzz=0.7 km, Gp=108 degrees |
| Event ID# | nc75273996 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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