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 #7: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro quarry occurred at 12:26:49 PM (PDT) on Tuesday, July 22, 2025.
The magnitude 1.6 event (a probable quarry explosion) occurred 4 km (2 miles) SE of Home Gardens, CA.
The hypocentral depth is -0.50 km (-0.30 miles).


Magnitude 1.6 - local magnitude (Ml)
Time Tuesday, July 22, 2025 at 12:26:49 PM (PDT)
Tuesday, July 22, 2025 at 19:26:49 (UTC)
Distance from Home Gardens, CA - 4 km (2 miles) SE (137 degrees)
Corona, CA - 7 km (4 miles) ESE (106 degrees)
Norco, CA - 10 km (6 miles) SSE (149 degrees)
Woodcrest, CA - 13 km (8 miles) WSW (255 degrees)
Pedley, CA - 14 km (9 miles) S (186 degrees)
Coordinates 33 deg. 51.1 min. N (33.852N), 117 deg. 29.6 min. W (117.493W)
Depth -0.50 km (-0.30 miles)
Quality Fair
Location Quality Parameters Nst=51, Nph=51, Dmin=5.9 km, Rmss=0.21 sec, Erho=0.27 km, Erzz=31.61 km, Gp=31 degrees
Event ID# ci41028951
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