Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 8:18:18 AM (PDT) on Tuesday, September 23, 2025.
The magnitude 2.1 event occurred 44 km (27 miles) SW of Ferndale, CA.
The hypocentral depth is 22 km (13 miles).
| Magnitude | 2.1 - duration magnitude (Md) |
| Time | Tuesday, September 23, 2025 at 8:18:18 AM (PDT) Tuesday, September 23, 2025 at 15:18:18 (UTC) |
| Distance from |
Ferndale, CA - 44 km (27 miles) SW (233 degrees) Rio Dell, CA - 52 km (32 miles) WSW (250 degrees) Fortuna, CA - 53 km (33 miles) WSW (237 degrees) Hydesville, CA - 55 km (34 miles) WSW (245 degrees) Humboldt Hill, CA - 60 km (37 miles) SW (224 degrees) |
| Coordinates | 40 deg. 20.3 min. N (40.338N), 124 deg. 40.9 min. W (124.681W) |
| Depth | 21.54 km (13.40 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=41, Nph=48, Dmin=29.3 km, Rmss=0.22 sec, Erho=0.54 km, Erzz=0.42 km, Gp=236 degrees |
| Event ID# | nc75240942 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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