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 1:55:39 AM (PST) on Sunday, December 21, 2025.
The magnitude 2.5 event occurred 6 km (4 miles) ESE of Talmage, CA.
The hypocentral depth is -1 km (-0.30 miles).
| Magnitude | 2.5 - duration magnitude (Md) |
| Time | Sunday, December 21, 2025 at 1:55:39 AM (PST) Sunday, December 21, 2025 at 9:55:39 (UTC) |
| Distance from |
Talmage, CA - 6 km (4 miles) ESE (121 degrees) Ukiah, CA - 10 km (6 miles) ESE (119 degrees) North Lakeport, CA - 18 km (11 miles) W (276 degrees) Lakeport, CA - 18 km (11 miles) WNW (293 degrees) Upper Lake, CA - 18 km (11 miles) WSW (249 degrees) |
| Coordinates | 39 deg. 6.3 min. N (39.105N), 123 deg. 6.4 min. W (123.107W) |
| Depth | -0.53 km (-0.30 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=40.5 km, Rmss=0.21 sec, Erho=4.1 km, Erzz=6.11999989 km, Gp=167 degrees |
| Event ID# | nc75283921 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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