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 10:10:48 PM (PDT) on Monday, September 1, 2025.
The magnitude 1.7 event occurred 19 km (12 miles) NE (42 degrees) of Upper Lake, CA.
The hypocentral depth is 5 km ( 3 miles).
| Magnitude | 1.7 - duration magnitude (Md) |
| Time | Monday, September 1, 2025 at 10:10:48 PM (PDT) Tuesday, September 2, 2025 at 5:10:48 (UTC) |
| Distance from |
Upper Lake, CA - 19 km (12 miles) NE (42 degrees) Nice, CA - 20 km (12 miles) NNE (21 degrees) North Lakeport, CA - 25 km (16 miles) NNE (28 degrees) Lakeport, CA - 30 km (19 miles) NNE (25 degrees) Clearlake Oaks, CA - 30 km (19 miles) NNW (344 degrees) |
| Coordinates | 39 deg. 17.3 min. N (39.288N), 122 deg. 45.9 min. W (122.766W) |
| Depth | 5.18 km (3.20 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=26, Nph=31, Dmin=12.9 km, Rmss=0.20 sec, Erho=0.31 km, Erzz=1.22 km, Gp=54 degrees |
| Event ID# | nc75231882 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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