== 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 6:36:07 PM (PDT) on Thursday, May 7, 2009.
The magnitude 0.5 event occurred 18 km (11 miles) WSW of Toms Place, CA.
The hypocentral depth is 6 km ( 4 miles).


Magnitude 0.5 - duration magnitude (Md)
Time Thursday, May 7, 2009 at 6:36:07 PM (PDT)
Friday, May 8, 2009 at 1:36:07 (UTC)
Distance from Toms Place, CA - 18 km (11 miles) WSW (237 degrees)
Mammoth Lakes, CA - 21 km (13 miles) SSE (149 degrees)
Round Valley, CA - 24 km (15 miles) WNW (286 degrees)
West Bishop, CA - 38 km (24 miles) WNW (289 degrees)
Sacramento, CA - 259 km (161 miles) ESE (117 degrees)
Coordinates 37 deg. 28.3 min. N (37.472N), 118 deg. 51.2 min. W (118.854W)
Depth 6.5 km (4.0 miles)
Location Quality Fair
Location Quality Parameters Nst= 11, Nph= 11, Dmin=12 km, Rmss=0.04 sec, Erho=0.5 km, Erzz=31.6 km, Gp=169.2 degrees
Event ID# nc71218196
Additional Information map with fault names
Google Earth KML (Requires Google Earth.)

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

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