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 7:35:11 AM (PDT) on Monday, October 20, 2025.
The magnitude 1.4 event occurred 28 km (18 miles) SSW of Rio Dell, CA.
The hypocentral depth is 12 km ( 7 miles).
| Magnitude | 1.4 - duration magnitude (Md) |
| Time | Monday, October 20, 2025 at 7:35:11 AM (PDT) Monday, October 20, 2025 at 14:35:11 (UTC) |
| Distance from |
Rio Dell, CA - 28 km (18 miles) SSW (193 degrees) Hydesville, CA - 34 km (21 miles) SSW (193 degrees) Redway, CA - 34 km (21 miles) WNW (296 degrees) Ferndale, CA - 37 km (23 miles) S (169 degrees) Fortuna, CA - 39 km (24 miles) S (183 degrees) |
| Coordinates | 40 deg. 15.1 min. N (40.252N), 124 deg. 11.0 min. W (124.184W) |
| Depth | 11.55 km (7.20 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=7, Nph=7, Dmin=1.2 km, Rmss=0.04 sec, Erho=0.77 km, Erzz=0.639999986 km, Gp=139 degrees |
| Event ID# | nc75251986 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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