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 5:01:11 AM (PDT) on Wednesday, October 28, 2026.
The magnitude 4.0 event occurred 34 km (21 miles) NE (40 degrees) of Redwood Valley, CA.
The hypocentral depth is 12 km ( 7 miles).
| Magnitude | 4.0 - moment magnitude (Mw) |
| Time | Wednesday, October 28, 2026 at 5:01:11 AM (PDT) Wednesday, October 28, 2026 at 12:01:11 (UTC) |
| Distance from |
Redwood Valley, CA - 34 km (21 miles) NE (40 degrees) Willits, CA - 36 km (22 miles) ENE (74 degrees) Brooktrails, CA - 38 km (23 miles) E (80 degrees) Upper Lake, CA - 38 km (23 miles) N (355 degrees) Covelo, CA - 41 km (26 miles) SE (142 degrees) |
| Coordinates | 39 deg. 30.0 min. N (39.501N), 122 deg. 57.1 min. W (122.952W) |
| Depth | 11.59 km (7.20 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=87, Nph=100, Dmin=1.8 km, Rmss=0.16 sec, Erho=0.14 km, Erzz=0.41 km, Gp=25 degrees |
| Event ID# | nc75458907 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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