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 5:39:33 AM (PDT) on Tuesday, September 9, 2025.
The magnitude 1.7 event occurred 30 km (18 miles) SW of Ferndale, CA.
The hypocentral depth is 14 km ( 9 miles).
| Magnitude | 1.7 - duration magnitude (Md) |
| Time | Tuesday, September 9, 2025 at 5:39:33 AM (PDT) Tuesday, September 9, 2025 at 12:39:33 (UTC) |
| Distance from |
Ferndale, CA - 30 km (18 miles) SW (217 degrees) Rio Dell, CA - 35 km (22 miles) WSW (245 degrees) Fortuna, CA - 37 km (23 miles) SW (226 degrees) Hydesville, CA - 38 km (24 miles) WSW (238 degrees) Humboldt Hill, CA - 47 km (29 miles) SSW (211 degrees) |
| Coordinates | 40 deg. 21.9 min. N (40.366N), 124 deg. 28.5 min. W (124.476W) |
| Depth | 14.15 km (8.80 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=11, Nph=11, Dmin=13.1 km, Rmss=0.04 sec, Erho=2.96 km, Erzz=0.810000002 km, Gp=282 degrees |
| Event ID# | nc75235467 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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