Magnitude 4.0 near Piedmont, CA

Thursday, September 4, 2003 at 6:39:53 PM (PDT)

Preliminary Earthquake Report

Magnitude 4.0 Time Friday, September 5, 2003 at 1:39:53 (UTC) Thursday, September 4, 2003 at 6:39:53 PM (PDT) Distance from 3 km (2 miles) NNE (18 degrees) of Piedmont, CA 5 km (3 miles) ESE (122 degrees) of Berkeley, CA 6 km (4 miles) E (79 degrees) of Emeryville, CA 6 km (4 miles) SW (225 degrees) of Orinda, CA Coordinates 37 deg. 50.7 min. N (37.845N) 122 deg. 13.3 min. W (122.222W) Depth 12.4 km (7.7 miles) Quality Excellent

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Preliminary Earthquake Report
USGS, Menlo Park, CA
U.S. Geological Survey, Menlo Park, California
U.C. Berkeley Seismological Laboratory,
Berkeley, California