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 3:44:54 AM (PST) on Monday, December 15, 2025.
The magnitude 1.5 event occurred 11 km (7 miles) E (95 degrees) of Angwin, CA.
The hypocentral depth is -0.17 km (-0.10 miles).
| Magnitude | 1.5 - duration magnitude (Md) |
| Time | Monday, December 15, 2025 at 3:44:54 AM (PST) Monday, December 15, 2025 at 11:44:54 (UTC) |
| Distance from |
Angwin, CA - 11 km (7 miles) E (95 degrees) Saint Helena, CA - 14 km (9 miles) ENE (60 degrees) Yountville, CA - 19 km (12 miles) N (9 degrees) Calistoga, CA - 22 km (14 miles) E (93 degrees) Kenwood, CA - 26 km (16 miles) NE (48 degrees) |
| Coordinates | 38 deg. 34.1 min. N (38.568N), 122 deg. 19.7 min. W (122.329W) |
| Depth | -0.17 km (-0.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=10, Nph=10, Dmin=9.3 km, Rmss=0.06 sec, Erho=0.44 km, Erzz=2.97000003 km, Gp=112 degrees |
| Event ID# | nc75280266 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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