(Ml 4.2) CALTECH/USGS EARTHQUAKE MESSAGE

[quake-large-owner@eqinfo.wr.usgs.gov]

                     == PRELIMINARY EARTHQUAKE REPORT ==

                    California Integrated Seismic Network
                           http://www.cisn.org
                      USGS/Caltech/CGS/UCB/UCSD/UNR

Version 1: This report supersedes any earlier reports about this event.

This is a computer-generated message and has not yet been reviewed by a
seismologist.

PRINCIPAL EARTHQUAKE PARAMETERS
_______________________________


Magnitude              : 4.2  Ml (A light quake)
Event Date & Time      :  5/20/2005   05:39:32 PM PDT
                          5/21/2005   00:39:32    UTC
Coordinates            : 33.2267 N, 116.2107 W
                       : (33 deg. 13.60 min. N,  116 deg. 12.64 min. W)
Depth                  :    7.7 miles (  12.2 km)
Location Quality       : Excellent
  8 mi. ( 13 km) NW  of Ocotillo Wells, CA
 45 mi. ( 72 km) SSE of Palm Springs, CA
 16 mi. ( 26 km) NNW of OCOTILLO (quarry)

More Information about this event and other earthquakes is available at
http://quake.wr.usgs.gov/recenteqs/latestfault.htm

ADDITIONAL EARTHQUAKE PARAMETERS
________________________________
rms misfit                   :  0.30 seconds
horizontal location error    :   0.3 km
vertical location error      :   2.0 km
maximum azimuthal gap        :    22 degrees
distance to nearest station  :  15.0 km
event ID                     : 14146956

SOURCE OF INFORMATION/CONTACTS
________________________________

CISN Southern California Management Center

         Caltech Seismological Laboratory
         U.S. Geological Survey

         http://www.cisn.org/scmc.html

________________________________

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