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 10:18:39 PM (PDT) on Tuesday, April 6, 2021.
The magnitude 0.9 event occurred 4 km (2 miles) NNE (21 degrees) of Fontana, CA.
The hypocentral depth is 8 km ( 5 miles).


Magnitude 0.9 - local magnitude (Ml)
Time Tuesday, April 6, 2021 at 10:18:39 PM (PDT)
Wednesday, April 7, 2021 at 5:18:39 (UTC)
Distance from Fontana, CA - 4 km (2 miles) NNE (21 degrees)
Rialto, CA - 7 km (4 miles) WNW (289 degrees)
Bloomington, CA - 8 km (5 miles) NW (325 degrees)
Muscoy, CA - 10 km (6 miles) WSW (252 degrees)
Devore, CA - 11 km (7 miles) SSW (201 degrees)
Coordinates 34 deg. 7.6 min. N (34.127N), 117 deg. 26.7 min. W (117.444W)
Depth 7.82 km (4.9 miles)
Quality Good
Location Quality Parameters Nst=23, Nph=29, Dmin=10.7 km, Rmss=0.16 sec, Erho=0.35 km, Erzz=1.81 km, Gp=79 degrees
Event ID# ci39841528
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