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 #5: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro earthquake occurred at 6:21:55 AM (PDT) on Monday, July 21, 2025.
The magnitude 1.0 event occurred 6 km (4 miles) NNE (23 degrees) of La Verne, CA.
The hypocentral depth is 8 km ( 5 miles).
| Magnitude | 1.0 - local magnitude (Ml) |
| Time | Monday, July 21, 2025 at 6:21:55 AM (PDT) Monday, July 21, 2025 at 13:21:55 (UTC) |
| Distance from |
La Verne, CA - 6 km (4 miles) NNE (23 degrees) Claremont, CA - 6 km (4 miles) NNW (341 degrees) San Dimas, CA - 8 km (5 miles) NE (51 degrees) Montclair, CA - 9 km (6 miles) NNW (329 degrees) Pomona, CA - 10 km (6 miles) N (7 degrees) |
| Coordinates | 34 deg. 9.0 min. N (34.150N), 117 deg. 44.5 min. W (117.742W) |
| Depth | 7.99 km (5.00 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=26, Nph=44, Dmin=8.0 km, Rmss=0.19 sec, Erho=0.26 km, Erzz=0.54 km, Gp=55 degrees |
| Event ID# | ci41027519 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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