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 9:24:55 PM (PST) on Saturday, February 21, 2026.
The magnitude 1.7 event occurred 2 km (1 miles) WSW of Pomona, CA.
The hypocentral depth is 10 km ( 6 miles).
| Magnitude | 1.7 - local magnitude (Ml) |
| Time | Saturday, February 21, 2026 at 9:24:55 PM (PST) Sunday, February 22, 2026 at 5:24:55 (UTC) |
| Distance from |
Pomona, CA - 2 km (1 miles) WSW (249 degrees) Diamond Bar, CA - 4 km (3 miles) NE (49 degrees) La Verne, CA - 5 km (3 miles) S (186 degrees) San Dimas, CA - 6 km (4 miles) SSE (152 degrees) Chino Hills, CA - 7 km (4 miles) NNW (348 degrees) |
| Coordinates | 34 deg. 3.3 min. N (34.055N), 117 deg. 46.4 min. W (117.774W) |
| Depth | 9.81 km (6.10 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=81, Nph=148, Dmin=5.1 km, Rmss=0.2 sec, Erho=0.15 km, Erzz=0.3 km, Gp=20 degrees |
| Event ID# | ci41401440 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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