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 10:35:40 PM (PST) on Monday, December 1, 2025.
The magnitude 1.1 event occurred 2 km (1 miles) SE of Pacifica, CA.
The hypocentral depth is 10 km ( 6 miles).
| Magnitude | 1.1 - duration magnitude (Md) |
| Time | Monday, December 1, 2025 at 10:35:40 PM (PST) Tuesday, December 2, 2025 at 6:35:40 (UTC) |
| Distance from |
Pacifica, CA - 2 km (1 miles) SE (139 degrees) San Bruno, CA - 6 km (4 miles) SW (236 degrees) Montara, CA - 7 km (5 miles) NNE (33 degrees) Millbrae, CA - 7 km (5 miles) W (270 degrees) South San Francisco, CA - 8 km (5 miles) SW (222 degrees) |
| Coordinates | 37 deg. 35.9 min. N (37.599N), 122 deg. 28.2 min. W (122.470W) |
| Depth | 10.18 km (6.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=8, Nph=8, Dmin=3.1 km, Rmss=0.03 sec, Erho=1.21 km, Erzz=2.8499999 km, Gp=110 degrees |
| Event ID# | nc75272931 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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