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 5:34:24 PM (PDT) on Wednesday, October 1, 2025.
The magnitude 1.6 event occurred 17 km (10 miles) NNW of Upper Lake, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 1.6 - duration magnitude (Md) |
| Time | Wednesday, October 1, 2025 at 5:34:24 PM (PDT) Thursday, October 2, 2025 at 0:34:24 (UTC) |
| Distance from |
Upper Lake, CA - 17 km (10 miles) NNW (333 degrees) Redwood Valley, CA - 18 km (11 miles) ENE (78 degrees) Talmage, CA - 23 km (14 miles) NE (38 degrees) Nice, CA - 23 km (15 miles) NW (326 degrees) Ukiah, CA - 24 km (15 miles) NE (47 degrees) |
| Coordinates | 39 deg. 17.9 min. N (39.298N), 123 deg. 0.0 min. W (123.000W) |
| Depth | 5.77 km (3.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=8, Nph=8, Dmin=9.2 km, Rmss=0.04 sec, Erho=0.46 km, Erzz=2.05999994 km, Gp=133 degrees |
| Event ID# | nc75243701 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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