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 4:13:36 AM (PDT) on Thursday, September 18, 2025.
The magnitude 2.3 event occurred 16 km (10 miles) SSE of Rio Dell, CA.
The hypocentral depth is 27 km (17 miles).
| Magnitude | 2.3 - duration magnitude (Md) |
| Time | Thursday, September 18, 2025 at 4:13:36 AM (PDT) Thursday, September 18, 2025 at 11:13:36 (UTC) |
| Distance from |
Rio Dell, CA - 16 km (10 miles) SSE (159 degrees) Hydesville, CA - 21 km (13 miles) SSE (166 degrees) Fortuna, CA - 28 km (17 miles) SSE (159 degrees) Ferndale, CA - 30 km (19 miles) SE (141 degrees) Redway, CA - 33 km (20 miles) NW (326 degrees) |
| Coordinates | 40 deg. 22.0 min. N (40.366N), 124 deg. 2.3 min. W (124.038W) |
| Depth | 26.76 km (16.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=21, Nph=21, Dmin=7.1 km, Rmss=0.12 sec, Erho=0.64 km, Erzz=1.48000002 km, Gp=129 degrees |
| Event ID# | nc75239107 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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