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 3:37:17 PM (PST) on Sunday, December 28, 2025.
The magnitude 1.8 event occurred 9 km (6 miles) SW of Corona, CA.
The hypocentral depth is 4 km ( 3 miles).
| Magnitude | 1.8 - local magnitude (Ml) |
| Time | Sunday, December 28, 2025 at 3:37:17 PM (PST) Sunday, December 28, 2025 at 23:37:17 (UTC) |
| Distance from |
Corona, CA - 9 km (6 miles) SW (232 degrees) Home Gardens, CA - 13 km (8 miles) WSW (241 degrees) Villa Park, CA - 15 km (9 miles) E (88 degrees) North Tustin, CA - 15 km (9 miles) ENE (66 degrees) Foothill Ranch, CA - 15 km (9 miles) N (5 degrees) |
| Coordinates | 33 deg. 49.1 min. N (33.819N), 117 deg. 38.9 min. W (117.648W) |
| Depth | 4.22 km (2.60 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=90, Nph=160, Dmin=4.4 km, Rmss=0.18 sec, Erho=0.12 km, Erzz=0.3 km, Gp=23 degrees |
| Event ID# | ci41148431 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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