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 11:07:43 PM (PDT) on Wednesday, August 20, 2025.
The magnitude 1.4 event occurred 9 km (6 miles) SW of Corona, CA.
The hypocentral depth is 4 km ( 2 miles).
| Magnitude | 1.4 - local magnitude (Ml) |
| Time | Wednesday, August 20, 2025 at 11:07:43 PM (PDT) Thursday, August 21, 2025 at 6:07:43 (UTC) |
| Distance from |
Corona, CA - 9 km (6 miles) SW (236 degrees) Home Gardens, CA - 13 km (8 miles) WSW (243 degrees) Foothill Ranch, CA - 15 km (10 miles) N (4 degrees) Villa Park, CA - 15 km (9 miles) E (86 degrees) North Tustin, CA - 15 km (9 miles) ENE (63 degrees) |
| Coordinates | 33 deg. 49.5 min. N (33.825N), 117 deg. 38.9 min. W (117.649W) |
| Depth | 3.56 km (2.20 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=60, Nph=108, Dmin=4.9 km, Rmss=0.19 sec, Erho=0.16 km, Erzz=0.29 km, Gp=35 degrees |
| Event ID# | ci41270448 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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