Recent Earthquakes in California and Nevada
== PRELIMINARY EVENT REPORT ==
Southern California Seismic Network: a cooperative project of
U.S. Geological Survey, Pasadena California
Caltech Seismological Laboratory, Pasadena, California
Version #6: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 11:15:19 AM (PDT) on Monday, July 28, 2025.
The magnitude 1.5 event (a probable quarry explosion) occurred 45 km (28 miles) NE (54 degrees) of Holtville, CA.
The hypocentral depth is -0.23 km (-0.10 miles).
| Magnitude | 1.5 - local magnitude (Ml) |
| Time | Monday, July 28, 2025 at 11:15:19 AM (PDT) Monday, July 28, 2025 at 18:15:19 (UTC) |
| Distance from |
Holtville, CA - 45 km (28 miles) NE (54 degrees) Los Algodones, B.C., MX - 46 km (28 miles) NNW (328 degrees) Calipatria, CA - 49 km (31 miles) E (100 degrees) Yuma, AZ - 50 km (31 miles) NW (316 degrees) Brawley, CA - 51 km (31 miles) E (81 degrees) |
| Coordinates | 33 deg. 3.0 min. N (33.049N), 114 deg. 59.6 min. W (114.994W) |
| Depth | -0.23 km (-0.10 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=11, Nph=11, Dmin=8.7 km, Rmss=0.25 sec, Erho=0.69 km, Erzz=31.61 km, Gp=65 degrees |
| Event ID# | ci41034663 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
[
Index map ||
Big earthquake list ||
All earthquake list ||
Glossary of terms ||
Top page
]
[
Did you feel it? ||
ShakeMaps
|| Relative2Me
]
[ Data Sources ]
Special maps
Long Valley || Los Angeles || San Francisco
Data Sources
US and World - USGS/NEIC = National Earthquake Information Center
Northern California - UCB = University of California, Berkeley
Southern California - Caltech = California Institute of Technology
Nevada - UNR = University of Nevada, Reno
Offshore = West Coast & Alaska Tsunami Warning Center
...all members of the Advanced National Seismic System (ANSS)
