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 2:27:31 PM (PDT) on Saturday, August 23, 2025.
The magnitude 1.0 event occurred 4 km (3 miles) W of Cobb, CA.
The hypocentral depth is 4 km ( 2 miles).
| Magnitude | 1.0 - duration magnitude (Md) |
| Time | Saturday, August 23, 2025 at 2:27:31 PM (PDT) Saturday, August 23, 2025 at 21:27:31 (UTC) |
| Distance from |
Cobb, CA - 4 km (3 miles) W (270 degrees) The Geysers, CA - 5 km (3 miles) NNW (346 degrees) Middletown, CA - 16 km (10 miles) WNW (300 degrees) Lower Lake, CA - 17 km (11 miles) SW (235 degrees) Kelseyville, CA - 18 km (11 miles) SSE (161 degrees) |
| Coordinates | 38 deg. 49.3 min. N (38.822N), 122 deg. 46.3 min. W (122.771W) |
| Depth | 3.51 km (2.20 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=0.9 km, Rmss=0.03 sec, Erho=0.52 km, Erzz=1.12 km, Gp=97 degrees |
| Event ID# | nc75227817 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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