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 8:18:57 AM (PDT) on Sunday, August 31, 2025.
The magnitude 1.6 event occurred 14 km (9 miles) N (9 degrees) of Upper Lake, CA.
The hypocentral depth is 1 km (0.30 miles).
| Magnitude | 1.6 - duration magnitude (Md) |
| Time | Sunday, August 31, 2025 at 8:18:57 AM (PDT) Sunday, August 31, 2025 at 15:18:57 (UTC) |
| Distance from |
Upper Lake, CA - 14 km (9 miles) N (9 degrees) Nice, CA - 19 km (12 miles) N (350 degrees) North Lakeport, CA - 23 km (14 miles) N (4 degrees) Redwood Valley, CA - 28 km (17 miles) E (84 degrees) Lakeport, CA - 28 km (17 miles) N (5 degrees) |
| Coordinates | 39 deg. 17.6 min. N (39.293N), 122 deg. 53.1 min. W (122.885W) |
| Depth | 0.54 km (0.30 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=10, Nph=10, Dmin=19.1 km, Rmss=0.11 sec, Erho=0.48 km, Erzz=9.18000031 km, Gp=148 degrees |
| Event ID# | nc75231257 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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