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 #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 10:34:51 PM (PDT) on Wednesday, October 1, 2025.
The magnitude 1.5 event occurred 9 km (6 miles) SW of Corona, CA.
The hypocentral depth is 5 km ( 3 miles).
| Magnitude | 1.5 - local magnitude (Ml) |
| Time | Wednesday, October 1, 2025 at 10:34:51 PM (PDT) Thursday, October 2, 2025 at 5:34:51 (UTC) |
| Distance from |
Corona, CA - 9 km (6 miles) SW (221 degrees) Home Gardens, CA - 13 km (8 miles) SW (233 degrees) Foothill Ranch, CA - 14 km (9 miles) N (11 degrees) North Tustin, CA - 16 km (10 miles) ENE (72 degrees) Norco, CA - 16 km (10 miles) SSW (210 degrees) |
| Coordinates | 33 deg. 48.5 min. N (33.808N), 117 deg. 38.0 min. W (117.633W) |
| Depth | 4.89 km (3.00 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=69, Nph=121, Dmin=2.6 km, Rmss=0.18 sec, Erho=0.14 km, Erzz=0.28 km, Gp=48 degrees |
| Event ID# | ci41101671 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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