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Southern California Earthquake Data Center

Recent Earthquakes

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 event has been reviewed by a seismologist.


A micro earthquake occurred at 8:19:58 AM (PDT) on Saturday, May 4, 2013.
The magnitude 1.0 event occurred 2 km (1 miles) WSW of San Bernardino, CA.
The hypocentral depth is 17 km (10 miles).




Magnitude 1.0 - local magnitude (Ml)
Time Saturday, May 4, 2013 at 8:19:58 AM (PDT)
Saturday, May 4, 2013 at 15:19:58 (UTC)
Distance from San Bernardino, CA - 2 km (1 miles) WSW (253 degrees)
Rialto, CA - 5 km (3 miles) E (97 degrees)
Loma Linda, CA - 8 km (5 miles) NW (316 degrees)
Fontana, CA - 11 km (7 miles) E (93 degrees)
Coordinates 34 deg. 6.1 min. N (34.101N), 117 deg. 19.0 min. W (117.316W)
Depth 16.6 km (10.3 miles)
Quality Good
Location Quality Parameters Nst= 33, Nph= 47, Dmin=11 km, Rmss=0.17 sec, Erho=0.4 km, Erzz=0.7 km, Gp=50.4 degrees
Event ID ci15337577
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