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 #3: This report supersedes any earlier reports of this event. This is a computer-generated message. This event has not yet been reviewed by a seismologist.

A micro earthquake occurred at 9:29:38 PM (PDT) on Tuesday, May 5, 2026.
The magnitude 1.0 event occurred 8 km (5 miles) NNW of Fontana, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 1.0 - local magnitude (Ml)
Time Tuesday, May 5, 2026 at 9:29:38 PM (PDT)
Wednesday, May 6, 2026 at 4:29:38 (UTC)
Distance from Fontana, CA - 8 km (5 miles) NNW (343 degrees)
Rancho Cucamonga, CA - 10 km (6 miles) ENE (62 degrees)
Devore, CA - 10 km (6 miles) SW (230 degrees)
Lytle Creek, CA - 10 km (7 miles) S (172 degrees)
Rialto, CA - 12 km (8 miles) WNW (302 degrees)
Coordinates 34 deg. 9.9 min. N (34.166N), 117 deg. 29.0 min. W (117.483W)
Depth 6.41 km (4.00 miles)
Quality Good
Location Quality Parameters Nst=49, Nph=82, Dmin=7.0 km, Rmss=0.19 sec, Erho=0.19 km, Erzz=0.47 km, Gp=42 degrees
Event ID# ci41242127
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