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 6:55:22 PM (PDT) on Tuesday, October 21, 2025.
The magnitude 0.5 event occurred 2 km (1 miles) NW of The Geysers, CA.
The hypocentral depth is 2 km ( 2 miles).
| Magnitude | 0.5 - duration magnitude (Md) |
| Time | Tuesday, October 21, 2025 at 6:55:22 PM (PDT) Wednesday, October 22, 2025 at 1:55:22 (UTC) |
| Distance from |
The Geysers, CA - 2 km (1 miles) NW (314 degrees) Cobb, CA - 6 km (3 miles) SW (229 degrees) Middletown, CA - 14 km (9 miles) WNW (287 degrees) Lower Lake, CA - 19 km (12 miles) SW (226 degrees) Hidden Valley Lake, CA - 19 km (12 miles) W (264 degrees) |
| Coordinates | 38 deg. 47.3 min. N (38.789N), 122 deg. 46.3 min. W (122.772W) |
| Depth | 2.42 km (1.50 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=1.5 km, Rmss=0.01 sec, Erho=0.37 km, Erzz=0.75999999 km, Gp=87 degrees |
| Event ID# | nc75252656 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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