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 0:52:57 AM (PST) on Monday, December 29, 2025.
The magnitude 1.9 event occurred 3 km (2 miles) SE of Pacifica, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 1.9 - duration magnitude (Md) |
| Time | Monday, December 29, 2025 at 0:52:57 AM (PST) Monday, December 29, 2025 at 8:52:57 (UTC) |
| Distance from |
Pacifica, CA - 3 km (2 miles) SE (133 degrees) San Bruno, CA - 6 km (4 miles) SW (230 degrees) Millbrae, CA - 7 km (4 miles) W (267 degrees) Montara, CA - 8 km (5 miles) NE (38 degrees) South San Francisco, CA - 8 km (5 miles) SW (216 degrees) |
| Coordinates | 37 deg. 35.7 min. N (37.596N), 122 deg. 27.8 min. W (122.463W) |
| Depth | 8.98 km (5.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=24, Nph=22, Dmin=3.7 km, Rmss=0.03 sec, Erho=0.3 km, Erzz=0.349999994 km, Gp=93 degrees |
| Event ID# | nc75288046 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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