Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 9:49:21 AM (PDT) on Monday, September 1, 2025.
The magnitude 1.2 event occurred 12 km (7 miles) W of Boonville, CA.
The hypocentral depth is 0.18 km (0.10 miles).
| Magnitude | 1.2 - duration magnitude (Md) |
| Time | Monday, September 1, 2025 at 9:49:21 AM (PDT) Monday, September 1, 2025 at 16:49:21 (UTC) |
| Distance from |
Boonville, CA - 12 km (7 miles) W (278 degrees) Ukiah, CA - 29 km (18 miles) WSW (241 degrees) Talmage, CA - 31 km (19 miles) WSW (247 degrees) Sea Ranch, CA - 35 km (21 miles) N (353 degrees) Redwood Valley, CA - 37 km (23 miles) SW (224 degrees) |
| Coordinates | 39 deg. 1.4 min. N (39.023N), 123 deg. 30.2 min. W (123.503W) |
| Depth | 0.18 km (0.10 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=18, Nph=25, Dmin=4.1 km, Rmss=0.10 sec, Erho=0.18 km, Erzz=0.47 km, Gp=62 degrees |
| Event ID# | nc75231662 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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