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 12:05:53 PM (PDT) on Sunday, April 4, 2021.
The magnitude 1.5 event occurred 3 km (2 miles) NNE (18 degrees) of Fontana, CA.
The hypocentral depth is 9 km ( 6 miles).


Magnitude 1.5 - local magnitude (Ml)
Time Sunday, April 4, 2021 at 12:05:53 PM (PDT)
Sunday, April 4, 2021 at 19:05:53 (UTC)
Distance from Fontana, CA - 3 km (2 miles) NNE (18 degrees)
Rialto, CA - 7 km (5 miles) WNW (288 degrees)
Bloomington, CA - 8 km (5 miles) NW (323 degrees)
Muscoy, CA - 10 km (6 miles) WSW (252 degrees)
Devore, CA - 11 km (7 miles) SSW (202 degrees)
Coordinates 34 deg. 7.6 min. N (34.127N), 117 deg. 26.8 min. W (117.447W)
Depth 9.01 km (5.6 miles)
Quality Good
Location Quality Parameters Nst=69, Nph=125, Dmin=3.1 km, Rmss=0.17 sec, Erho=0.14 km, Erzz=0.32 km, Gp=34 degrees
Event ID# ci39838456
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