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 1:09:56 AM (PDT) on Wednesday, April 7, 2021.
The magnitude 0.8 event occurred 3 km (2 miles) N (0 degrees) of Fontana, CA.
The hypocentral depth is 11 km ( 7 miles).


Magnitude 0.8 - local magnitude (Ml)
Time Wednesday, April 7, 2021 at 1:09:56 AM (PDT)
Wednesday, April 7, 2021 at 8:09:56 (UTC)
Distance from Fontana, CA - 3 km (2 miles) N (0 degrees)
Bloomington, CA - 8 km (5 miles) NW (316 degrees)
Rialto, CA - 8 km (5 miles) WNW (283 degrees)
Rancho Cucamonga, CA - 11 km (7 miles) E (90 degrees)
Muscoy, CA - 11 km (7 miles) WSW (252 degrees)
Coordinates 34 deg. 7.4 min. N (34.123N), 117 deg. 27.5 min. W (117.458W)
Depth 10.79 km (6.7 miles)
Quality Good
Location Quality Parameters Nst=17, Nph=20, Dmin=10.2 km, Rmss=0.23 sec, Erho=0.58 km, Erzz=1 km, Gp=76 degrees
Event ID# ci39841592
Additional Information Map

For more information, see https://earthquake.usgs.gov

[ Index map || Big earthquake list || All earthquake list || Glossary of terms || Top page ]
[ Did you feel it? || ShakeMaps || Relative2Me ]
[ Data Sources ]

Special maps
Long Valley || Los Angeles || San Francisco

Data Sources
US and World - USGS/NEIC = National Earthquake Information Center
Northern California - UCB = University of California, Berkeley
Southern California - Caltech = California Institute of Technology
Nevada - UNR = University of Nevada, Reno
Offshore = West Coast & Alaska Tsunami Warning Center
...all members of the Advanced National Seismic System (ANSS)