Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #6: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A light earthquake occurred at 5:25:25 PM (PDT) on Tuesday, August 4, 2026.
The magnitude 4.0 event occurred 31 km (19 miles) NNW of Covelo, CA.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 4.0 - moment magnitude (Mw) |
| Time | Tuesday, August 4, 2026 at 5:25:25 PM (PDT) Wednesday, August 5, 2026 at 0:25:25 (UTC) |
| Distance from |
Covelo, CA - 31 km (19 miles) NNW (327 degrees) Redway, CA - 34 km (21 miles) ESE (108 degrees) Laytonville, CA - 38 km (23 miles) N (5 degrees) Hayfork, CA - 63 km (39 miles) SSW (201 degrees) Brooktrails, CA - 65 km (40 miles) N (356 degrees) |
| Coordinates | 40 deg. 1.6 min. N (40.026N), 123 deg. 26.7 min. W (123.445W) |
| Depth | 7.87 km (4.90 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=49, Nph=61, Dmin=10.5 km, Rmss=0.22 sec, Erho=0.23 km, Erzz=0.5 km, Gp=27 degrees |
| Event ID# | nc75411492 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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