SCEDC Home
Home

== PRELIMINARY EARTHQUAKE REPORT ==

U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory, Berkeley, California



Version #0: 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 5:46:30 AM (PDT) on Friday, May 3, 2013.
The magnitude 1.1 event occurred 3 km (2 miles) ESE of Pacifica, CA.
The hypocentral depth is 7 km ( 4 miles).



Magnitude 1.1 - duration magnitude (Md)
Time Friday, May 3, 2013 at 5:46:30 AM (PDT)
Friday, May 3, 2013 at 12:46:30 (UTC)
Distance from Pacifica, CA - 3 km (2 miles) ESE (113 degrees)
Millbrae, CA - 6 km (4 miles) W (275 degrees)
South San Francisco, CA - 7 km (4 miles) SW (215 degrees)
San Francisco City Hall, CA - 19 km (12 miles) S (189 degrees)
Coordinates 37 deg. 36.2 min. N (37.603N), 122 deg. 27.2 min. W (122.453W)
Depth 6.8 km (4.2 miles)
Quality Excellent
Location Quality Parameters Nst= 9, Nph= 9, Dmin=4 km, Rmss=0.06 sec, Erho=0.4 km, Erzz=0.7 km, Gp=86.4 degrees
Event ID# nc71984671
Additional Information map || waveforms
   Waveforms

For more information, see http://quake.wr.usgs.gov/

[ Index map || big earthquake list || all earthquake list || glossary of terms || top page ]
[ Did you feel it? || Shake Map North || Relative2Me ]
[ Data Sources || Contacts ]

Research Tools
General Earthquake Information
Stations/ Instrumentation
About the Data Center