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 6:32:07 AM (PDT) on Tuesday, September 23, 2025.
The magnitude 1.5 event occurred 12 km (8 miles) W of Ukiah, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 1.5 - duration magnitude (Md) |
| Time | Tuesday, September 23, 2025 at 6:32:07 AM (PDT) Tuesday, September 23, 2025 at 13:32:07 (UTC) |
| Distance from |
Ukiah, CA - 12 km (8 miles) W (269 degrees) Boonville, CA - 15 km (10 miles) N (6 degrees) Talmage, CA - 16 km (10 miles) W (276 degrees) Redwood Valley, CA - 18 km (11 miles) SW (223 degrees) Willits, CA - 29 km (18 miles) S (179 degrees) |
| Coordinates | 39 deg. 8.8 min. N (39.147N), 123 deg. 20.9 min. W (123.349W) |
| Depth | 6.09 km (3.80 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=11, Nph=11, Dmin=7.7 km, Rmss=0.04 sec, Erho=0.27 km, Erzz=1.10000002 km, Gp=62 degrees |
| Event ID# | nc75240917 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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