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 7:43:38 AM (PDT) on Saturday, September 20, 2025.
The magnitude 1.8 event occurred 24 km (15 miles) SW of Ferndale, CA.
The hypocentral depth is 21 km (13 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Saturday, September 20, 2025 at 7:43:38 AM (PDT) Saturday, September 20, 2025 at 14:43:38 (UTC) |
| Distance from |
Ferndale, CA - 24 km (15 miles) SW (230 degrees) Fortuna, CA - 32 km (20 miles) WSW (237 degrees) Rio Dell, CA - 32 km (20 miles) WSW (258 degrees) Hydesville, CA - 35 km (21 miles) WSW (250 degrees) Humboldt Hill, CA - 40 km (25 miles) SW (218 degrees) |
| Coordinates | 40 deg. 26.4 min. N (40.439N), 124 deg. 28.8 min. W (124.480W) |
| Depth | 21.13 km (13.10 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=16, Nph=16, Dmin=15.8 km, Rmss=0.05 sec, Erho=2.16 km, Erzz=0.519999981 km, Gp=276 degrees |
| Event ID# | nc75239867 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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