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 7:11:53 PM (PDT) on Wednesday, September 17, 2025.
The magnitude 1.5 event occurred 21 km (13 miles) NNE (31 degrees) of Upper Lake, CA.
The hypocentral depth is 7 km ( 5 miles).
| Magnitude | 1.5 - duration magnitude (Md) |
| Time | Wednesday, September 17, 2025 at 7:11:53 PM (PDT) Thursday, September 18, 2025 at 2:11:53 (UTC) |
| Distance from |
Upper Lake, CA - 21 km (13 miles) NNE (31 degrees) Nice, CA - 23 km (14 miles) NNE (13 degrees) North Lakeport, CA - 28 km (17 miles) NNE (21 degrees) Lakeport, CA - 33 km (21 miles) NNE (19 degrees) Clearlake Oaks, CA - 35 km (21 miles) NNW (343 degrees) |
| Coordinates | 39 deg. 19.4 min. N (39.324N), 122 deg. 47.3 min. W (122.789W) |
| Depth | 7.37 km (4.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=8, Nph=8, Dmin=9.9 km, Rmss=0.13 sec, Erho=0.7 km, Erzz=1.95000005 km, Gp=173 degrees |
| Event ID# | nc75239002 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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