Recent Earthquakes in California and Nevada
== PRELIMINARY EVENT REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California
Version #2: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 11:32:02 AM (PDT) on Friday, September 19, 2025.
The magnitude 1.5 event (a probable quarry explosion) occurred 7 km (4 miles) E of Santa Venetia, CA.
The hypocentral depth is -0.03 km (-0.00 miles).
| Magnitude | 1.5 - duration magnitude (Md) |
| Time | Friday, September 19, 2025 at 11:32:02 AM (PDT) Friday, September 19, 2025 at 18:32:02 (UTC) |
| Distance from |
Santa Venetia, CA - 7 km (4 miles) E (100 degrees) San Rafael, CA - 7 km (5 miles) ENE (77 degrees) North Richmond, CA - 8 km (5 miles) WNW (294 degrees) San Anselmo, CA - 10 km (6 miles) E (81 degrees) Kentfield, CA - 10 km (6 miles) ENE (67 degrees) |
| Coordinates | 37 deg. 59.3 min. N (37.988N), 122 deg. 27.0 min. W (122.450W) |
| Depth | -0.03 km (-0.00 miles) |
| Quality | Good |
| Location Quality Parameters | Nst=18, Nph=18, Dmin=2.7 km, Rmss=0.10 sec, Erho=0.22 km, Erzz=31.61 km, Gp=87 degrees |
| Event ID# | nc75239602 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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