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 7:20:00 PM (PDT) on Thursday, October 23, 2025.
The magnitude 1.1 event occurred 5 km (3 miles) W of Cobb, CA.
The hypocentral depth is 1 km ( 1 mile).
| Magnitude | 1.1 - duration magnitude (Md) |
| Time | Thursday, October 23, 2025 at 7:20:00 PM (PDT) Friday, October 24, 2025 at 2:20:00 (UTC) |
| Distance from |
Cobb, CA - 5 km (3 miles) W (272 degrees) The Geysers, CA - 6 km (4 miles) NNW (334 degrees) Middletown, CA - 17 km (10 miles) WNW (298 degrees) Kelseyville, CA - 18 km (11 miles) SSE (165 degrees) Lower Lake, CA - 18 km (11 miles) WSW (238 degrees) |
| Coordinates | 38 deg. 49.4 min. N (38.824N), 122 deg. 47.1 min. W (122.785W) |
| Depth | 0.90 km (0.60 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=13, Nph=13, Dmin=1.2 km, Rmss=0.02 sec, Erho=0.26 km, Erzz=0.479999989 km, Gp=63 degrees |
| Event ID# | nc75253731 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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