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 7:01:08 PM (PDT) on Saturday, October 3, 2026.
The magnitude 1.9 event occurred 17 km (11 miles) SSW of Chester, CA.
The hypocentral depth is 4 km ( 3 miles).
| Magnitude | 1.9 - duration magnitude (Md) |
| Time | Saturday, October 3, 2026 at 7:01:08 PM (PDT) Sunday, October 4, 2026 at 2:01:08 (UTC) |
| Distance from |
Chester, CA - 17 km (11 miles) SSW (212 degrees) Greenville, CA - 33 km (21 miles) W (277 degrees) Quincy, CA - 43 km (26 miles) NW (309 degrees) Forest Ranch, CA - 43 km (27 miles) NE (41 degrees) Magalia, CA - 45 km (28 miles) NNE (27 degrees) |
| Coordinates | 40 deg. 10.6 min. N (40.177N), 121 deg. 20.2 min. W (121.337W) |
| Depth | 4.43 km (2.80 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=16.3 km, Rmss=0.09 sec, Erho=0.77 km, Erzz=3.01999998 km, Gp=167 degrees |
| Event ID# | nc75443921 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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