Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 11:21:07 PM (PDT) on Wednesday, September 10, 2025.
The magnitude 1.8 event occurred 11 km (7 miles) N (5 degrees) of Upper Lake, CA.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Wednesday, September 10, 2025 at 11:21:07 PM (PDT) Thursday, September 11, 2025 at 6:21:07 (UTC) |
| Distance from |
Upper Lake, CA - 11 km (7 miles) N (5 degrees) Nice, CA - 16 km (10 miles) NNW (344 degrees) North Lakeport, CA - 20 km (12 miles) N (2 degrees) Lakeport, CA - 25 km (15 miles) N (3 degrees) Redwood Valley, CA - 26 km (16 miles) E (90 degrees) |
| Coordinates | 39 deg. 15.9 min. N (39.265N), 122 deg. 54.0 min. W (122.899W) |
| Depth | 8.45 km (5.30 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=47, Nph=50, Dmin=7.5 km, Rmss=0.11 sec, Erho=0.14 km, Erzz=0.45 km, Gp=32 degrees |
| Event ID# | nc75236242 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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