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 9:39:06 PM (PST) on Tuesday, December 23, 2025.
The magnitude 1.5 event occurred 14 km (9 miles) NE (40 degrees) of Napa, CA.
The hypocentral depth is 5 km ( 3 miles).
| Magnitude | 1.5 - duration magnitude (Md) |
| Time | Tuesday, December 23, 2025 at 9:39:06 PM (PST) Wednesday, December 24, 2025 at 5:39:06 (UTC) |
| Distance from |
Napa, CA - 14 km (9 miles) NE (40 degrees) Yountville, CA - 16 km (10 miles) E (92 degrees) Green Valley, CA - 16 km (10 miles) N (354 degrees) Vacaville, CA - 17 km (11 miles) WNW (284 degrees) Fairfield, CA - 20 km (13 miles) NW (323 degrees) |
| Coordinates | 38 deg. 23.7 min. N (38.396N), 122 deg. 10.9 min. W (122.182W) |
| Depth | 5.45 km (3.40 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=5.1 km, Rmss=0.03 sec, Erho=0.34 km, Erzz=0.660000026 km, Gp=116 degrees |
| Event ID# | nc75285541 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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