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 5:23:50 PM (PST) on Friday, January 23, 2026.
The magnitude 1.3 event occurred 4 km (3 miles) SSE of Ontario, CA.
The hypocentral depth is 16 km (10 miles).
| Magnitude | 1.3 - local magnitude (Ml) |
| Time | Friday, January 23, 2026 at 5:23:50 PM (PST) Saturday, January 24, 2026 at 1:23:50 (UTC) |
| Distance from |
Ontario, CA - 4 km (3 miles) SSE (151 degrees) Chino, CA - 8 km (5 miles) E (86 degrees) Mira Loma, CA - 9 km (5 miles) WNW (289 degrees) Montclair, CA - 10 km (6 miles) SE (130 degrees) Upland, CA - 10 km (6 miles) SSE (155 degrees) |
| Coordinates | 34 deg. 1.1 min. N (34.018N), 117 deg. 36.3 min. W (117.604W) |
| Depth | 15.65 km (9.70 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=44, Nph=74, Dmin=10.5 km, Rmss=0.15 sec, Erho=0.18 km, Erzz=0.25 km, Gp=52 degrees |
| Event ID# | ci41170415 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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