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 6:47:26 AM (PDT) on Thursday, July 24, 2025.
The magnitude 0.5 event occurred 12 km (7 miles) NNW of Upland, CA.
The hypocentral depth is 6 km ( 4 miles).
| Magnitude | 0.5 - local magnitude (Ml) |
| Time | Thursday, July 24, 2025 at 6:47:26 AM (PDT) Thursday, July 24, 2025 at 13:47:26 (UTC) |
| Distance from |
Upland, CA - 12 km (7 miles) NNW (348 degrees) Claremont, CA - 12 km (8 miles) NNE (19 degrees) Rancho Cucamonga, CA - 12 km (8 miles) NW (314 degrees) Montclair, CA - 14 km (9 miles) N (5 degrees) La Verne, CA - 14 km (9 miles) NE (37 degrees) |
| Coordinates | 34 deg. 12.0 min. N (34.200N), 117 deg. 40.5 min. W (117.676W) |
| Depth | 5.91 km (3.70 miles) |
| Quality | Excellent |
| Location Quality Parameters | Nst=11, Nph=19, Dmin=2.0 km, Rmss=0.12 sec, Erho=0.28 km, Erzz=0.44 km, Gp=68 degrees |
| Event ID# | ci41030791 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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