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 4:36:36 PM (PST) on Monday, December 8, 2025.
The magnitude 1.0 event occurred 4 km (2 miles) NNW of The Geysers, CA.
The hypocentral depth is 1 km ( 1 mile).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Monday, December 8, 2025 at 4:36:36 PM (PST) Tuesday, December 9, 2025 at 0:36:36 (UTC) |
| Distance from |
The Geysers, CA - 4 km (2 miles) NNW (339 degrees) Cobb, CA - 4 km (3 miles) WSW (253 degrees) Middletown, CA - 15 km (9 miles) WNW (295 degrees) Lower Lake, CA - 18 km (11 miles) SW (232 degrees) Kelseyville, CA - 19 km (12 miles) SSE (163 degrees) |
| Coordinates | 38 deg. 48.6 min. N (38.811N), 122 deg. 46.4 min. W (122.773W) |
| Depth | 1.37 km (0.90 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=14, Nph=14, Dmin=0.8 km, Rmss=0.03 sec, Erho=0.26 km, Erzz=0.479999989 km, Gp=81 degrees |
| Event ID# | nc75276996 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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