SOUTHERN CALIFORNIA
	     	           SEISMOGRAPHIC NETWORK

			  A Cooperative Project of
	          Caltech and the U.S. Geological Survey


						January 2, 1997

		Weekly Earthquake Report for Southern California
		------------------------------------------------
        	      December 25, 1996 - January 1, 1997

	Prepared by:  Kate Hutton, Seismological Laboratory
		      (kate@bombay.gps.caltech.edu)
		      Lucy Jones, U. S. Geological Survey
		      California Institute of Technology

	For further information, please contact the authors or the 
	Caltech Public Relations Office at 818-395-6327.  For daily 
	updates, call our Earthquake Information Hotline: 818-395-6977.
			--------------------------------
	This week's Report covers the time period from midnight Thursday
	morning, December 26, Universal Time (ie. GMT), to midnight 
	Wednesday night, January 1, Universal Time.  In local time, 
	the period of coverage is from 4 p.m., December 25, Pacific 
	Standard Time, to 4 p.m., January 1, Pacific Standard Time.
		Because of the holidays, last week's and this week's 
	Weekly Reports have been produced from automatically processed 
	data only.  This means, in particular, that the total number of 
	events will be lower than it otherwise would be.  We hope to get 
	caught up in January and resummarize the late December activity 
	for our readers.
		This week was a fairly quiet week.  There were only two
	M3+ quakes, both in the Peninsula Range geologic province, which
	consists of the old mountains that lie inland between Los Angeles
	and San Diego.  Neither was an aftershock.  The first, a M3.6,
	occurred near Hemet on Saturday afternoon, along the San Jacinto
	Fault system.  The second, a M3.1, occurred along the Elsinore 
	Fault just southeast of Lake Elsinore, late Monday afternoon.
	The Hemet quake was felt as far away as Indio, but we have not
	received any inquiries about the Lake Elsinore quake.
                Table 1 lists the quakes this week that were M2.0 or
        larger in the central part of the coverage area.  Times are local 
	times; if you want Greenwich Mean Time, add 7 hrs to the Pacific 
	Daylight Time or 8 hrs to the Pacific Standard Time listed.

	Table 1
	-------
	Date  Time      N Lat.   W Long.   Mag  
	-------------------------------------------------------------
        12/26  8:15 pm  36  3.0  117 38.8  2.0  16 mi. E of Coso Junction
        12/26 11:36 pm  36  3.0  117 51.9  2.1  4 mi. E of Coso Junction
        12/27 12:55 am  36  1.8  117 38.6  2.3  17 mi. E of Coso Junction
        12/27 10:40 am  34  8.3  116 26.0  2.1  1 mi. NNE of Yucca Valley
        12/27  9:54 pm  34  2.5  118 32.2  2.0  3 mi. WNW of Santa Monica
        12/28  2:41 pm  33 45.3  116 54.0  3.6  4 mi. E of Hemet
						FELT
        12/28 11:56 pm  32 40.8  115 55.6  2.2  5 mi. SE of Ocotillo
        12/30  3:07 pm  32 41.1  115 54.2  2.2  6 mi. ESE of Ocotillo
        12/30  3:08 pm  32 43.0  115 49.1  2.0  10 mi. E of Ocotillo
        12/30  5:41 pm  33 37.2  117 15.8  3.1  5 mi. SE of Lake Elsinore
        12/30 10:28 pm  32 33.5  115 31.5  2.2  7 mi. SSW of Calexico
        12/31  4:13 am  34 15.6  118 37.0  2.5  Under Chatsworth
	-------------------------------------------------------------