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 #4: 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 11:19:44 PM (PDT) on Friday, October 31, 2025.
The magnitude 0.9 event occurred 4 km (2 miles) NE (52 degrees) of Riverside, CA.
The hypocentral depth is 12 km ( 7 miles).
| Magnitude | 0.9 - local magnitude (Ml) |
| Time | Friday, October 31, 2025 at 11:19:44 PM (PDT) Saturday, November 1, 2025 at 6:19:44 (UTC) |
| Distance from |
Riverside, CA - 4 km (2 miles) NE (52 degrees) Rubidoux, CA - 5 km (3 miles) SE (128 degrees) Grand Terrace, CA - 9 km (5 miles) SSW (213 degrees) Pedley, CA - 10 km (6 miles) E (94 degrees) Woodcrest, CA - 10 km (6 miles) N (356 degrees) |
| Coordinates | 33 deg. 58.1 min. N (33.969N), 117 deg. 21.8 min. W (117.364W) |
| Depth | 11.54 km (7.20 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=23, Nph=23, Dmin=11.3 km, Rmss=0.35 sec, Erho=1.16 km, Erzz=2.24 km, Gp=132 degrees |
| Event ID# | ci41323712 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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