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 4:33:51 PM (PDT) on Tuesday, October 21, 2025.
The magnitude 1.0 event occurred 7 km (4 miles) E (90 degrees) of Villa Park, CA.
The hypocentral depth is 4 km ( 2 miles).
| Magnitude | 1.0 - local magnitude (Ml) |
| Time | Tuesday, October 21, 2025 at 4:33:51 PM (PDT) Tuesday, October 21, 2025 at 23:33:51 (UTC) |
| Distance from |
Villa Park, CA - 7 km (4 miles) E (90 degrees) North Tustin, CA - 7 km (5 miles) NE (43 degrees) Orange, CA - 9 km (5 miles) E (82 degrees) Tustin, CA - 11 km (7 miles) NE (47 degrees) Yorba Linda, CA - 11 km (7 miles) SE (140 degrees) |
| Coordinates | 33 deg. 48.8 min. N (33.814N), 117 deg. 44.3 min. W (117.739W) |
| Depth | 3.68 km (2.30 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=15, Nph=17, Dmin=9.0 km, Rmss=0.12 sec, Erho=0.9 km, Erzz=1.09 km, Gp=219 degrees |
| Event ID# | ci41112487 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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