Recent Earthquakes in California and Nevada
== PRELIMINARY EVENT REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 11:20:36 AM (PDT) on Tuesday, July 22, 2025.
The magnitude 1.8 event (a probable quarry explosion) occurred 6 km (4 miles) E (84 degrees) of Bonadelle Ranchos-Madera Ranch, CA.
The hypocentral depth is -0.39 km (-0.20 miles).
| Magnitude | 1.8 - duration magnitude (Md) |
| Time | Tuesday, July 22, 2025 at 11:20:36 AM (PDT) Tuesday, July 22, 2025 at 18:20:36 (UTC) |
| Distance from |
Bonadelle Ranchos-Madera Ranch, CA - 6 km (4 miles) E (84 degrees) Parksdale, CA - 19 km (12 miles) ENE (76 degrees) Clovis, CA - 21 km (13 miles) NNW (332 degrees) Madera, CA - 22 km (14 miles) E (82 degrees) Parkwood, CA - 22 km (14 miles) ENE (71 degrees) |
| Coordinates | 36 deg. 59.4 min. N (36.990N), 119 deg. 48.7 min. W (119.811W) |
| Depth | -0.39 km (-0.20 miles) |
| Quality | Poor |
| Location Quality Parameters | Nst=9, Nph=9, Dmin=9.3 km, Rmss=0.05 sec, Erho=0.84 km, Erzz=31.61 km, Gp=211 degrees |
| Event ID# | nc75213612 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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