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 10:18:50 PM (PDT) on Thursday, September 18, 2025.
The magnitude 1.6 event occurred 5 km (3 miles) WNW of Cobb, CA.
The hypocentral depth is 2 km ( 1 mile).
| Magnitude | 1.6 - duration magnitude (Md) |
| Time | Thursday, September 18, 2025 at 10:18:50 PM (PDT) Friday, September 19, 2025 at 5:18:50 (UTC) |
| Distance from |
Cobb, CA - 5 km (3 miles) WNW (287 degrees) The Geysers, CA - 7 km (4 miles) NNW (341 degrees) Kelseyville, CA - 17 km (10 miles) SSE (163 degrees) Middletown, CA - 17 km (11 miles) WNW (303 degrees) Lower Lake, CA - 17 km (11 miles) WSW (241 degrees) |
| Coordinates | 38 deg. 50.2 min. N (38.836N), 122 deg. 46.9 min. W (122.782W) |
| Depth | 2.07 km (1.30 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=29, Nph=29, Dmin=0.8 km, Rmss=0.03 sec, Erho=0.24 km, Erzz=0.340000004 km, Gp=113 degrees |
| Event ID# | nc75239382 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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