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 7:44:22 PM (PDT) on Thursday, September 4, 2025.
The magnitude 2.2 event occurred 34 km (21 miles) SSW of Ferndale, CA.
The hypocentral depth is 9 km ( 6 miles).
| Magnitude | 2.2 - duration magnitude (Md) |
| Time | Thursday, September 4, 2025 at 7:44:22 PM (PDT) Friday, September 5, 2025 at 2:44:22 (UTC) |
| Distance from |
Ferndale, CA - 34 km (21 miles) SSW (209 degrees) Rio Dell, CA - 36 km (23 miles) SW (234 degrees) Hydesville, CA - 40 km (25 miles) SW (229 degrees) Fortuna, CA - 41 km (25 miles) SW (218 degrees) Humboldt Hill, CA - 51 km (32 miles) SSW (206 degrees) |
| Coordinates | 40 deg. 18.5 min. N (40.309N), 124 deg. 27.3 min. W (124.454W) |
| Depth | 8.95 km (5.60 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=14, Nph=12, Dmin=9.8 km, Rmss=0.06 sec, Erho=2.28 km, Erzz=0.529999971 km, Gp=279 degrees |
| Event ID# | nc75233272 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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