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 9:33:11 PM (PDT) on Monday, September 15, 2025.
The magnitude 1.8 event occurred 31 km (19 miles) SSW of Ferndale, CA.
The hypocentral depth is 19 km (12 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Monday, September 15, 2025 at 9:33:11 PM (PDT) Tuesday, September 16, 2025 at 4:33:11 (UTC) |
| Distance from |
Ferndale, CA - 31 km (19 miles) SSW (210 degrees) Rio Dell, CA - 34 km (21 miles) WSW (238 degrees) Hydesville, CA - 38 km (23 miles) SW (232 degrees) Fortuna, CA - 38 km (24 miles) SW (220 degrees) Humboldt Hill, CA - 48 km (30 miles) SSW (207 degrees) |
| Coordinates | 40 deg. 20.2 min. N (40.336N), 124 deg. 26.7 min. W (124.446W) |
| Depth | 19.40 km (12.10 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=5, Nph=4, Dmin=10.2 km, Rmss=0.01 sec, Erho=3.8 km, Erzz=1.26999998 km, Gp=268 degrees |
| Event ID# | nc75238272 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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