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 6:02:18 AM (PDT) on Tuesday, September 23, 2025.
The magnitude 1.4 event occurred 28 km (18 miles) S of Rio Dell, CA.
The hypocentral depth is 14 km ( 9 miles).
| Magnitude | 1.4 - duration magnitude (Md) |
| Time | Tuesday, September 23, 2025 at 6:02:18 AM (PDT) Tuesday, September 23, 2025 at 13:02:18 (UTC) |
| Distance from |
Rio Dell, CA - 28 km (18 miles) S (185 degrees) Redway, CA - 30 km (19 miles) WNW (298 degrees) Hydesville, CA - 34 km (21 miles) S (186 degrees) Ferndale, CA - 38 km (24 miles) SSE (164 degrees) Fortuna, CA - 39 km (24 miles) S (178 degrees) |
| Coordinates | 40 deg. 14.8 min. N (40.246N), 124 deg. 8.3 min. W (124.138W) |
| Depth | 14.50 km (9.00 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=1.6 km, Rmss=0.07 sec, Erho=0.67 km, Erzz=1.73000002 km, Gp=74 degrees |
| Event ID# | nc75240897 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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