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 3:30:38 AM (PST) on Sunday, December 28, 2025.
The magnitude 0.2 event occurred 5 km (3 miles) NW of Cobb, CA.
The hypocentral depth is -1 km (-1 miles).
| Magnitude | 0.2 - duration magnitude (Md) |
| Time | Sunday, December 28, 2025 at 3:30:38 AM (PST) Sunday, December 28, 2025 at 11:30:38 (UTC) |
| Distance from |
Cobb, CA - 5 km (3 miles) NW (307 degrees) The Geysers, CA - 8 km (5 miles) N (353 degrees) Lower Lake, CA - 15 km (9 miles) WSW (243 degrees) Kelseyville, CA - 16 km (10 miles) SSE (157 degrees) Middletown, CA - 17 km (11 miles) NW (309 degrees) |
| Coordinates | 38 deg. 50.9 min. N (38.848N), 122 deg. 46.1 min. W (122.768W) |
| Depth | -0.90 km (-0.60 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=1.0 km, Rmss=0.33 sec, Erho=1.1 km, Erzz=3.0999999 km, Gp=189 degrees |
| Event ID# | nc75287486 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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