Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 1:58:44 PM (PDT) on Wednesday, September 17, 2025.
The magnitude 0.4 event occurred 3 km (2 miles) W of Cobb, CA.
The hypocentral depth is 3 km ( 2 miles).
| Magnitude | 0.4 - duration magnitude (Md) |
| Time | Wednesday, September 17, 2025 at 1:58:44 PM (PDT) Wednesday, September 17, 2025 at 20:58:44 (UTC) |
| Distance from |
Cobb, CA - 3 km (2 miles) W (279 degrees) The Geysers, CA - 6 km (3 miles) N (354 degrees) Middletown, CA - 15 km (9 miles) WNW (303 degrees) Lower Lake, CA - 16 km (10 miles) SW (235 degrees) Kelseyville, CA - 18 km (11 miles) SSE (158 degrees) |
| Coordinates | 38 deg. 49.6 min. N (38.827N), 122 deg. 45.8 min. W (122.763W) |
| Depth | 2.57 km (1.60 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=13, Nph=13, Dmin=0.7 km, Rmss=0.02 sec, Erho=0.79 km, Erzz=1.28 km, Gp=232 degrees |
| Event ID# | nc75238932 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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