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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 9:56:19 PM (PDT) on Tuesday, May 7, 2013.
The magnitude 1.3 event occurred 6 km (4 miles) SW of Millbrae, CA.
The hypocentral depth is 10 km ( 6 miles).




Magnitude 1.3 - duration magnitude (Md)
Time Tuesday, May 7, 2013 at 9:56:19 PM (PDT)
Wednesday, May 8, 2013 at 4:56:19 (UTC)
Distance from Millbrae, CA - 6 km (4 miles) SW (214 degrees)
Burlingame, CA - 6 km (4 miles) WSW (239 degrees)
El Granada, CA - 7 km (4 miles) NE (34 degrees)
San Francisco City Hall, CA - 24 km (15 miles) S (181 degrees)
Coordinates 37 deg. 33.4 min. N (37.556N), 122 deg. 25.4 min. W (122.423W)
Depth 10.3 km (6.4 miles)
Quality Excellent
Location Quality Parameters Nst= 27, Nph= 27, Dmin=3 km, Rmss=0.12 sec, Erho=0.4 km, Erzz=0.5 km, Gp=82.8 degrees
Event ID nc71987671
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