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

A micro earthquake occurred at 4:43:50 AM (PDT) on Tuesday, July 18, 2023.
The magnitude 0.6 event occurred 4 km (3 miles) SSE of Lytle Creek, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 0.6 - local magnitude (Ml)
Time Tuesday, July 18, 2023 at 4:43:50 AM (PDT)
Tuesday, July 18, 2023 at 11:43:50 (UTC)
Distance from Lytle Creek, CA - 4 km (3 miles) SSE (161 degrees)
Devore, CA - 8 km (5 miles) W (272 degrees)
Fontana, CA - 14 km (9 miles) N (350 degrees)
Rancho Cucamonga, CA - 14 km (9 miles) NE (38 degrees)
Muscoy, CA - 15 km (9 miles) WNW (301 degrees)
Coordinates 34 deg. 13.5 min. N (34.224N), 117 deg. 29.1 min. W (117.485W)
Depth 9.18 km (5.7 miles)
Quality Good
Location Quality Parameters Nst=23, Nph=40, Dmin=1.1 km, Rmss=0.2 sec, Erho=0.31 km, Erzz=0.5 km, Gp=55 degrees
Event ID# ci39615386
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