== PRELIMINARY EARTHQUAKE REPORT ==

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

Version #3: This report supersedes any earlier reports of this event. This event has been reviewed by a seismologist.

A micro earthquake occurred at 8:22:04 AM (PDT) on Sunday, September 29, 2013.
The magnitude 2.3 event occurred 3 km (2 miles) WSW of Orinda, CA.
The hypocentral depth is 8 km ( 5 miles).

Magnitude		2.3 - duration magnitude (Md)
Time		Sunday, September 29, 2013 at 8:22:04 AM (PDT) Sunday, September 29, 2013 at 15:22:04 (UTC)
Distance from		Orinda, CA - 3 km (2 miles) WSW (239 degrees) Berkeley, CA - 5 km (3 miles) ESE (103 degrees) Oakland, CA - 8 km (5 miles) NE (39 degrees) San Francisco City Hall, CA - 20 km (13 miles) ENE (62 degrees)
Coordinates		37 deg. 51.6 min. N (37.861N), 122 deg. 12.7 min. W (122.212W)
Depth		7.5 km (4.7 miles)
Quality		Good
Location Quality Parameters		Nst=131, Nph=131, Dmin=3 km, Rmss=0.15 sec, Erho=0.1 km, Erzz=0.2 km, Gp=18 degrees
Event ID#		nc72078556
Additional Information		map || waveforms
		Waveforms NCSS First Motion Mechanism 1

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 ]