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 #4: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.
A micro quarry occurred at 2:37:22 PM (PDT) on Monday, August 11, 2025.
The magnitude 1.2 event (a probable quarry explosion) occurred 4 km (3 miles) SE of Home Gardens, CA.
The hypocentral depth is -1 km (-0.30 miles).
| Magnitude | 1.2 - local magnitude (Ml) |
| Time | Monday, August 11, 2025 at 2:37:22 PM (PDT) Monday, August 11, 2025 at 21:37:22 (UTC) |
| Distance from |
Home Gardens, CA - 4 km (3 miles) SE (134 degrees) Corona, CA - 8 km (5 miles) ESE (106 degrees) Norco, CA - 11 km (7 miles) SSE (147 degrees) Woodcrest, CA - 12 km (8 miles) WSW (254 degrees) Riverside, CA - 14 km (8 miles) SW (218 degrees) |
| Coordinates | 33 deg. 51.1 min. N (33.851N), 117 deg. 29.2 min. W (117.487W) |
| Depth | -0.52 km (-0.30 miles) |
| Quality | Fair |
| Location Quality Parameters | Nst=20, Nph=21, Dmin=5.4 km, Rmss=0.23 sec, Erho=0.47 km, Erzz=31.61 km, Gp=56 degrees |
| Event ID# | ci41258752 |
| Additional Information | Map |
For more information, see https://earthquake.usgs.gov
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