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 12:02:08 PM (PDT) on Monday, July 21, 2025.
The magnitude 1.7 event occurred 5 km (3 miles) SW of Rio Dell, CA.
The hypocentral depth is 19 km (12 miles).
| Magnitude | 1.7 - duration magnitude (Md) |
| Time | Monday, July 21, 2025 at 12:02:08 PM (PDT) Monday, July 21, 2025 at 19:02:08 (UTC) |
| Distance from |
Rio Dell, CA - 5 km (3 miles) SW (230 degrees) Hydesville, CA - 10 km (6 miles) SSW (209 degrees) Fortuna, CA - 14 km (9 miles) S (179 degrees) Ferndale, CA - 15 km (9 miles) SE (143 degrees) Humboldt Hill, CA - 29 km (18 miles) S (174 degrees) |
| Coordinates | 40 deg. 28.1 min. N (40.468N), 124 deg. 9.3 min. W (124.155W) |
| Depth | 19.04 km (11.80 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=12, Nph=12, Dmin=6.4 km, Rmss=0.08 sec, Erho=0.56 km, Erzz=0.790000021 km, Gp=176 degrees |
| Event ID# | nc75213032 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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