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 10:53:21 PM (PST) on Thursday, December 11, 2025.
The magnitude 0.9 event occurred 1 km (1 miles) NNE (17 degrees) of Placentia, CA.
The hypocentral depth is 9 km ( 5 miles).
| Magnitude | 0.9 - local magnitude (Ml) |
| Time | Thursday, December 11, 2025 at 10:53:21 PM (PST) Friday, December 12, 2025 at 6:53:21 (UTC) |
| Distance from |
Placentia, CA - 1 km (1 miles) NNE (17 degrees) Brea, CA - 5 km (3 miles) SE (140 degrees) Yorba Linda, CA - 5 km (3 miles) W (263 degrees) Anaheim, CA - 6 km (3 miles) NNE (23 degrees) Fullerton, CA - 6 km (4 miles) E (87 degrees) |
| Coordinates | 33 deg. 53.0 min. N (33.883N), 117 deg. 52.0 min. W (117.866W) |
| Depth | 8.63 km (5.40 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=41, Nph=65, Dmin=5.3 km, Rmss=0.21 sec, Erho=0.38 km, Erzz=0.54 km, Gp=57 degrees |
| Event ID# | ci41350168 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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