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 10:03:50 PM (PST) on Friday, February 20, 2026.
The magnitude 1.3 event occurred 6 km (4 miles) ESE of Ontario, CA.
The hypocentral depth is 5 km ( 3 miles).
| Magnitude | 1.3 - local magnitude (Ml) |
| Time | Friday, February 20, 2026 at 10:03:50 PM (PST) Saturday, February 21, 2026 at 6:03:50 (UTC) |
| Distance from |
Ontario, CA - 6 km (4 miles) ESE (114 degrees) Mira Loma, CA - 7 km (4 miles) NW (311 degrees) Glen Avon, CA - 8 km (5 miles) WNW (286 degrees) Rancho Cucamonga, CA - 10 km (6 miles) S (175 degrees) Upland, CA - 10 km (6 miles) SE (135 degrees) |
| Coordinates | 34 deg. 1.9 min. N (34.032N), 117 deg. 34.2 min. W (117.570W) |
| Depth | 4.68 km (2.90 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=22, Nph=32, Dmin=9.9 km, Rmss=0.14 sec, Erho=0.2 km, Erzz=0.79 km, Gp=73 degrees |
| Event ID# | ci41400928 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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