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 #7: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 1:29:24 PM (PST) on Monday, November 17, 2025.
The magnitude 1.6 event occurred 5 km (3 miles) SE of Ontario, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 1.6 - local magnitude (Ml) |
| Time | Monday, November 17, 2025 at 1:29:24 PM (PST) Monday, November 17, 2025 at 21:29:24 (UTC) |
| Distance from |
Ontario, CA - 5 km (3 miles) SE (132 degrees) Mira Loma, CA - 7 km (5 miles) WNW (297 degrees) Chino, CA - 9 km (6 miles) E (83 degrees) Upland, CA - 10 km (6 miles) SE (146 degrees) Glen Avon, CA - 10 km (6 miles) W (277 degrees) |
| Coordinates | 34 deg. 1.4 min. N (34.023N), 117 deg. 35.3 min. W (117.588W) |
| Depth | 6.33 km (3.90 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=59, Nph=102, Dmin=2.2 km, Rmss=0.15 sec, Erho=0.14 km, Erzz=0.35 km, Gp=34 degrees |
| Event ID# | ci41123223 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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