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 1:35:22 PM (PDT) on Wednesday, September 30, 2026.
The magnitude 1.2 event (a probable quarry explosion) occurred 2 km (1 miles) ESE of Home Gardens, CA.
The hypocentral depth is -0.44 km (-0.30 miles).


Magnitude 1.2 - local magnitude (Ml)
Time Wednesday, September 30, 2026 at 1:35:22 PM (PDT)
Wednesday, September 30, 2026 at 20:35:22 (UTC)
Distance from Home Gardens, CA - 2 km (1 miles) ESE (116 degrees)
Corona, CA - 6 km (4 miles) E (91 degrees)
Norco, CA - 8 km (5 miles) SE (146 degrees)
Pedley, CA - 12 km (7 miles) S (190 degrees)
Riverside, CA - 13 km (8 miles) SW (227 degrees)
Coordinates 33 deg. 52.1 min. N (33.869N), 117 deg. 29.9 min. W (117.498W)
Depth -0.44 km (-0.30 miles)
Quality Fair
Location Quality Parameters Nst=46, Nph=47, Dmin=5.9 km, Rmss=0.23 sec, Erho=0.31 km, Erzz=31.61 km, Gp=46 degrees
Event ID# ci41341159
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