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 9:46:53 AM (PDT) on Friday, October 3, 2025.
The magnitude 1.4 event occurred 4 km (2 miles) NE (53 degrees) of Graton, CA.
The hypocentral depth is 2 km ( 2 miles).
| Magnitude | 1.4 - duration magnitude (Md) |
| Time | Friday, October 3, 2025 at 9:46:53 AM (PDT) Friday, October 3, 2025 at 16:46:53 (UTC) |
| Distance from |
Graton, CA - 4 km (2 miles) NE (53 degrees) Forestville, CA - 5 km (3 miles) ESE (112 degrees) Sebastopol, CA - 6 km (4 miles) N (350 degrees) Windsor, CA - 10 km (6 miles) S (189 degrees) Larkfield-Wikiup, CA - 10 km (6 miles) SW (229 degrees) |
| Coordinates | 38 deg. 27.4 min. N (38.456N), 122 deg. 50.1 min. W (122.836W) |
| Depth | 2.37 km (1.50 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=5.4 km, Rmss=0.05 sec, Erho=0.26 km, Erzz=1.04999995 km, Gp=76 degrees |
| Event ID# | nc75244361 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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