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 9:06:30 PM (PDT) on Friday, September 19, 2025.
The magnitude 1.1 event occurred 9 km (6 miles) ENE (76 degrees) of Yorba Linda, CA.
The hypocentral depth is 12 km ( 7 miles).
| Magnitude | 1.1 - local magnitude (Ml) |
| Time | Friday, September 19, 2025 at 9:06:30 PM (PDT) Saturday, September 20, 2025 at 4:06:30 (UTC) |
| Distance from |
Yorba Linda, CA - 9 km (6 miles) ENE (76 degrees) Chino Hills, CA - 10 km (6 miles) SSE (157 degrees) Chino, CA - 12 km (7 miles) SSW (192 degrees) Villa Park, CA - 14 km (9 miles) NE (41 degrees) Corona, CA - 14 km (9 miles) WNW (287 degrees) |
| Coordinates | 33 deg. 54.5 min. N (33.908N), 117 deg. 42.9 min. W (117.715W) |
| Depth | 11.80 km (7.30 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=16, Nph=17, Dmin=2.9 km, Rmss=0.14 sec, Erho=1.31 km, Erzz=0.98 km, Gp=172 degrees |
| Event ID# | ci40446562 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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