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 11:59:27 PM (PDT) on Monday, October 27, 2025.
The magnitude 1.7 event occurred 3 km (2 miles) ESE of The Geysers, CA.
The hypocentral depth is 1 km (0.50 miles).
| Magnitude | 1.7 - duration magnitude (Md) |
| Time | Monday, October 27, 2025 at 11:59:27 PM (PDT) Tuesday, October 28, 2025 at 6:59:27 (UTC) |
| Distance from |
The Geysers, CA - 3 km (2 miles) ESE (105 degrees) Cobb, CA - 6 km (4 miles) S (184 degrees) Middletown, CA - 10 km (6 miles) WNW (282 degrees) Hidden Valley Lake, CA - 15 km (9 miles) WSW (254 degrees) Lower Lake, CA - 19 km (12 miles) SSW (213 degrees) |
| Coordinates | 38 deg. 46.3 min. N (38.771N), 122 deg. 43.7 min. W (122.728W) |
| Depth | 0.88 km (0.50 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=27, Nph=26, Dmin=1.1 km, Rmss=0.07 sec, Erho=0.22 km, Erzz=0.289999992 km, Gp=54 degrees |
| Event ID# | nc75255566 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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