Recent Earthquakes in California and Nevada


== PRELIMINARY EARTHQUAKE 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 earthquake occurred at 3:00:18 PM (PDT) on Saturday, April 4, 2026.
The magnitude 0.7 event occurred 7 km (4 miles) N of Fontana, CA.
The hypocentral depth is 7 km ( 4 miles).


Magnitude 0.7 - local magnitude (Ml)
Time Saturday, April 4, 2026 at 3:00:18 PM (PDT)
Saturday, April 4, 2026 at 22:00:18 (UTC)
Distance from Fontana, CA - 7 km (4 miles) N (352 degrees)
Devore, CA - 9 km (6 miles) SW (221 degrees)
Rancho Cucamonga, CA - 11 km (7 miles) ENE (69 degrees)
Lytle Creek, CA - 11 km (7 miles) SSE (166 degrees)
Muscoy, CA - 11 km (7 miles) W (273 degrees)
Coordinates 34 deg. 9.6 min. N (34.159N), 117 deg. 28.1 min. W (117.468W)
Depth 7.14 km (4.40 miles)
Quality Good
Location Quality Parameters Nst=22, Nph=36, Dmin=6.1 km, Rmss=0.16 sec, Erho=0.31 km, Erzz=0.59 km, Gp=80 degrees
Event ID# ci41432816
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