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 7:06:27 AM (PDT) on Saturday, August 23, 2025.
The magnitude 1.8 event occurred 11 km (7 miles) N (4 degrees) of Upper Lake, CA.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Saturday, August 23, 2025 at 7:06:27 AM (PDT) Saturday, August 23, 2025 at 14:06:27 (UTC) |
| Distance from |
Upper Lake, CA - 11 km (7 miles) N (4 degrees) Nice, CA - 17 km (10 miles) NNW (344 degrees) North Lakeport, CA - 20 km (12 miles) N (1 degrees) Lakeport, CA - 25 km (16 miles) N (3 degrees) Redwood Valley, CA - 26 km (16 miles) E (89 degrees) |
| Coordinates | 39 deg. 16.1 min. N (39.268N), 122 deg. 54.1 min. W (122.902W) |
| Depth | 7.96 km (4.90 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=21, Nph=21, Dmin=7.3 km, Rmss=0.15 sec, Erho=0.37 km, Erzz=1.01999998 km, Gp=59 degrees |
| Event ID# | nc75227717 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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