Recent Earthquakes in California and Nevada
== PRELIMINARY EARTHQUAKE REPORT ==
Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California
Version #3: 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 6:58:38 PM (PDT) on Friday, October 30, 2026.
The magnitude 1.1 event occurred 8 km (5 miles) N of Rancho Cucamonga, CA.
The hypocentral depth is 4 km ( 3 miles).
| Magnitude | 1.1 - local magnitude (Ml) |
| Time | Friday, October 30, 2026 at 6:58:38 PM (PDT) Saturday, October 31, 2026 at 1:58:38 (UTC) |
| Distance from |
Rancho Cucamonga, CA - 8 km (5 miles) N (356 degrees) Lytle Creek, CA - 11 km (7 miles) SW (229 degrees) Upland, CA - 12 km (8 miles) NNE (27 degrees) Montclair, CA - 16 km (10 miles) NE (36 degrees) Ontario, CA - 16 km (10 miles) NNE (14 degrees) |
| Coordinates | 34 deg. 11.8 min. N (34.197N), 117 deg. 35.1 min. W (117.586W) |
| Depth | 4.22 km (2.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=59, Nph=102, Dmin=8.0 km, Rmss=0.21 sec, Erho=0.18 km, Erzz=0.37 km, Gp=46 degrees |
| Event ID# | ci41570112 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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