Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 9:52:04 AM (PDT) on Tuesday, September 23, 2025.
The magnitude 1.2 event occurred 24 km (15 miles) W of Boonville, CA.
The hypocentral depth is -0.32 km (-0.20 miles).
| Magnitude | 1.2 - duration magnitude (Md) |
| Time | Tuesday, September 23, 2025 at 9:52:04 AM (PDT) Tuesday, September 23, 2025 at 16:52:04 (UTC) |
| Distance from |
Boonville, CA - 24 km (15 miles) W (269 degrees) Sea Ranch, CA - 36 km (22 miles) NNW (333 degrees) Ukiah, CA - 41 km (25 miles) WSW (247 degrees) Talmage, CA - 44 km (27 miles) WSW (251 degrees) Redwood Valley, CA - 48 km (30 miles) SW (233 degrees) |
| Coordinates | 39 deg. 0.3 min. N (39.005N), 123 deg. 38.6 min. W (123.644W) |
| Depth | -0.32 km (-0.20 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=12, Nph=12, Dmin=3.4 km, Rmss=0.17 sec, Erho=0.54 km, Erzz=2.33 km, Gp=136 degrees |
| Event ID# | nc75240977 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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