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== PRELIMINARY EARTHQUAKE REPORT ==
California Integrated Seismic Net
USGS/ Caltech/ CGS/ UCB/ UCSD/ UNR

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

A microearthquake occurred at 8:11:40 AM (PDT) on Friday, May 8, 2009.
The magnitude 1.0 event occurred 13 km (8 miles) ENE of Seven Trees, CA.
The hypocentral depth is 5 km ( 3 miles).


Magnitude 1.0 - duration magnitude (Md)
Time Friday, May 8, 2009 at 8:11:40 AM (PDT)
Friday, May 8, 2009 at 15:11:40 (UTC)
Distance from Seven Trees, CA - 13 km (8 miles) ENE (74 degrees)
Alum Rock, CA - 13 km (8 miles) ESE (114 degrees)
San Jose City Hall, CA - 18 km (11 miles) E (97 degrees)
Sunol-Midtown, CA - 19 km (12 miles) E (92 degrees)
Coordinates 37 deg. 19.2 min. N (37.320N), 121 deg. 41.5 min. W (121.692W)
Depth 4.9 km (3.0 miles)
Location Quality Good
Location Quality Parameters Nst= 15, Nph= 15, Dmin=5 km, Rmss=0.04 sec, Erho=0.3 km, Erzz=0.8 km, Gp=108 degrees
Event ID# nc71218186
Additional Information 2-degree map
Google Earth KML (Requires Google Earth.)

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

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