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 12:48:09 PM (PDT) on Tuesday, October 21, 2025.
The magnitude 0.8 event occurred 2 km (1 miles) E (82 degrees) of The Geysers, CA.
The hypocentral depth is 0.17 km (0.10 miles).
| Magnitude | 0.8 - duration magnitude (Md) |
| Time | Tuesday, October 21, 2025 at 12:48:09 PM (PDT) Tuesday, October 21, 2025 at 19:48:09 (UTC) |
| Distance from |
The Geysers, CA - 2 km (1 miles) E (82 degrees) Cobb, CA - 5 km (3 miles) SSW (192 degrees) Middletown, CA - 11 km (7 miles) WNW (286 degrees) Hidden Valley Lake, CA - 16 km (10 miles) WSW (258 degrees) Lower Lake, CA - 18 km (11 miles) SW (217 degrees) |
| Coordinates | 38 deg. 46.8 min. N (38.779N), 122 deg. 44.1 min. W (122.735W) |
| Depth | 0.17 km (0.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=6, Nph=6, Dmin=0.4 km, Rmss=0.01 sec, Erho=0.33 km, Erzz=0.689999998 km, Gp=92 degrees |
| Event ID# | nc75252541 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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