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 8:09:49 PM (PDT) on Sunday, September 28, 2025.
The magnitude 1.8 event occurred 28 km (17 miles) W of Boonville, CA.
The hypocentral depth is 1 km (0.50 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Sunday, September 28, 2025 at 8:09:49 PM (PDT) Monday, September 29, 2025 at 3:09:49 (UTC) |
| Distance from |
Boonville, CA - 28 km (17 miles) W (276 degrees) Sea Ranch, CA - 41 km (25 miles) NNW (331 degrees) Ukiah, CA - 43 km (27 miles) WSW (253 degrees) Fort Bragg, CA - 46 km (29 miles) SSE (168 degrees) Talmage, CA - 46 km (29 miles) WSW (257 degrees) |
| Coordinates | 39 deg. 2.1 min. N (39.035N), 123 deg. 41.3 min. W (123.688W) |
| Depth | 0.87 km (0.50 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=6, Nph=6, Dmin=7.1 km, Rmss=0.03 sec, Erho=1.86 km, Erzz=7.80000019 km, Gp=192 degrees |
| Event ID# | nc75243222 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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