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 1:29:25 PM (PDT) on Monday, August 18, 2025.
The magnitude 1.1 event (a probable quarry explosion) occurred 3 km (2 miles) S of Home Gardens, CA.
The hypocentral depth is -1 km (-0.30 miles).
| Magnitude | 1.1 - local magnitude (Ml) |
| Time | Monday, August 18, 2025 at 1:29:25 PM (PDT) Monday, August 18, 2025 at 20:29:25 (UTC) |
| Distance from |
Home Gardens, CA - 3 km (2 miles) S (180 degrees) Corona, CA - 5 km (3 miles) ESE (111 degrees) Norco, CA - 9 km (6 miles) SSE (163 degrees) Pedley, CA - 14 km (9 miles) SSW (197 degrees) Mira Loma, CA - 15 km (10 miles) S (181 degrees) |
| Coordinates | 33 deg. 51.3 min. N (33.855N), 117 deg. 31.2 min. W (117.521W) |
| Depth | -0.52 km (-0.30 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=15, Nph=15, Dmin=8.1 km, Rmss=0.21 sec, Erho=0.6 km, Erzz=31.61 km, Gp=96 degrees |
| Event ID# | ci40402210 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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