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 0:27:07 AM (PDT) on Saturday, October 4, 2025.
The magnitude 1.1 event occurred 3 km (2 miles) SW of Windsor, CA.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 1.1 - duration magnitude (Md) |
| Time | Saturday, October 4, 2025 at 0:27:07 AM (PDT) Saturday, October 4, 2025 at 7:27:07 (UTC) |
| Distance from |
Windsor, CA - 3 km (2 miles) SW (221 degrees) Forestville, CA - 7 km (4 miles) NE (37 degrees) Larkfield-Wikiup, CA - 8 km (5 miles) W (279 degrees) Graton, CA - 10 km (6 miles) NNE (14 degrees) Healdsburg, CA - 10 km (6 miles) SSE (166 degrees) |
| Coordinates | 38 deg. 31.5 min. N (38.524N), 122 deg. 50.5 min. W (122.842W) |
| Depth | 7.60 km (4.70 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=5, Nph=5, Dmin=30.6 km, Rmss=0.09 sec, Erho=3.19 km, Erzz=3.56999993 km, Gp=141 degrees |
| Event ID# | nc75244611 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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