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 1:36:54 AM (PDT) on Monday, August 4, 2025.
The magnitude 2.2 event occurred 29 km (18 miles) SW of Ferndale, CA.
The hypocentral depth is 18 km (12 miles).
| Magnitude | 2.2 - duration magnitude (Md) |
| Time | Monday, August 4, 2025 at 1:36:54 AM (PDT) Monday, August 4, 2025 at 8:36:54 (UTC) |
| Distance from |
Ferndale, CA - 29 km (18 miles) SW (220 degrees) Rio Dell, CA - 35 km (22 miles) WSW (247 degrees) Fortuna, CA - 37 km (23 miles) SW (228 degrees) Hydesville, CA - 38 km (23 miles) WSW (240 degrees) Humboldt Hill, CA - 46 km (29 miles) SSW (213 degrees) |
| Coordinates | 40 deg. 22.6 min. N (40.377N), 124 deg. 29.0 min. W (124.483W) |
| Depth | 18.47 km (11.50 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=20, Nph=20, Dmin=13.7 km, Rmss=0.11 sec, Erho=2.18 km, Erzz=0.469999999 km, Gp=283 degrees |
| Event ID# | nc75218947 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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