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 1:49:03 AM (PDT) on Monday, September 29, 2025.
The magnitude 1.5 event occurred 16 km (10 miles) SSE of Rio Dell, CA.
The hypocentral depth is 27 km (17 miles).
| Magnitude | 1.5 - duration magnitude (Md) |
| Time | Monday, September 29, 2025 at 1:49:03 AM (PDT) Monday, September 29, 2025 at 8:49:03 (UTC) |
| Distance from |
Rio Dell, CA - 16 km (10 miles) SSE (157 degrees) Hydesville, CA - 21 km (13 miles) SSE (165 degrees) Fortuna, CA - 28 km (17 miles) SSE (158 degrees) Ferndale, CA - 31 km (19 miles) SE (140 degrees) Redway, CA - 33 km (20 miles) NNW (327 degrees) |
| Coordinates | 40 deg. 21.9 min. N (40.365N), 124 deg. 1.9 min. W (124.032W) |
| Depth | 26.88 km (16.70 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=34, Nph=42, Dmin=7.5 km, Rmss=0.14 sec, Erho=0.36 km, Erzz=0.78 km, Gp=37 degrees |
| Event ID# | nc75243292 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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