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 3:08:01 PM (PDT) on Thursday, October 23, 2025.
The magnitude 1.2 event occurred 3 km (2 miles) N (8 degrees) of The Geysers, CA.
The hypocentral depth is 0.19 km (0.10 miles).
| Magnitude | 1.2 - duration magnitude (Md) |
| Time | Thursday, October 23, 2025 at 3:08:01 PM (PDT) Thursday, October 23, 2025 at 22:08:01 (UTC) |
| Distance from |
The Geysers, CA - 3 km (2 miles) N (8 degrees) Cobb, CA - 3 km (2 miles) WSW (237 degrees) Middletown, CA - 13 km (8 miles) WNW (298 degrees) Lower Lake, CA - 17 km (10 miles) SW (227 degrees) Hidden Valley Lake, CA - 17 km (10 miles) W (270 degrees) |
| Coordinates | 38 deg. 48.5 min. N (38.808N), 122 deg. 45.1 min. W (122.751W) |
| Depth | 0.19 km (0.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=12, Nph=12, Dmin=2.6 km, Rmss=0.02 sec, Erho=0.23 km, Erzz=1.02999997 km, Gp=112 degrees |
| Event ID# | nc75253546 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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