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Southern California Earthquake Data Center

Recent Earthquakes

Recent Earthquakes in California and Nevada

== PRELIMINARY EARTHQUAKE REPORT ==
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California

Version #2: This report supersedes any earlier reports of this event.
This event has been reviewed by a seismologist.


A micro earthquake occurred at 1:36:54 PM (PDT) on Wednesday, May 1, 2013.
The magnitude 0.7 event occurred 6 km (4 miles) SW of Millbrae, CA.
The hypocentral depth is 10 km ( 6 miles).




Magnitude 0.7 - duration magnitude (Md)
Time Wednesday, May 1, 2013 at 1:36:54 PM (PDT)
Wednesday, May 1, 2013 at 20:36:54 (UTC)
Distance from Millbrae, CA - 6 km (4 miles) SW (231 degrees)
Montara, CA - 7 km (4 miles) ENE (70 degrees)
El Granada, CA - 7 km (4 miles) NNE (20 degrees)
San Francisco City Hall, CA - 24 km (15 miles) S (185 degrees)
Coordinates 37 deg. 33.8 min. N (37.564N), 122 deg. 26.4 min. W (122.440W)
Depth 9.8 km (6.1 miles)
Quality Good
Location Quality Parameters Nst= 10, Nph= 10, Dmin=3 km, Rmss=0.04 sec, Erho=0.5 km, Erzz=1.5 km, Gp=97.2 degrees
Event ID nc71980355
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