SOUTHERN CALIFORNIA
	     	           SEISMOGRAPHIC NETWORK

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


						November 27, 1996

		Weekly Earthquake Report for Southern California
		------------------------------------------------
        	             November 21 - 26, 1996                   

	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, November 21, Universal Time (ie. GMT), to midnight 
	Wednesday night, November 26, Universal Time.  In local time, 
	the period of coverage is from 4 p.m., November 20, Pacific 
	Daylight Time, to 4 p.m., November 26, Pacific Daylight Time.
	Due to the upcoming Thanksgiving holiday, we are producing the
	weekly one day early this week.  We detected and processed 159 
	earthquakes during the six-day period covered.  Next week's Report
	will come out on Thursday as usual, and cover an eight-day 
	period.
		Seismicity was fairly low this week.  The largest event,
	and the only one felt, was a M3.3 in the San Gorgonio Pass on
	Sunday evening.  It was felt in the Hemet area.  This quake was
	not a part of the Landers/Big Bear aftershock sequence.  It 
	was located just southwest of the San Andreas fault zone, in the 
	graben between the San Andreas and San Jacinto faults.  The focal 
	mechansim showed oblique normal faulting, consistent with the 
	local tectonics.  The earthquake was relatively deep at 13 km 
	depth, but this is also common in this region.
		On Tuesday evening, after the end of the time period
	covered by this Report, there was a M4.1 Landers aftershock in 
	the Little San Bernardino Mtns.  We will cover that event in more
	detail in next week's Report.
                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  
	-------------------------------------------------------------
        11/20  7:50 pm  33 59.6  116 23.6  2.2  6 mi. ENE of Desert Hot 
						Springs
        11/20  8:58 pm  34  8.6  116 25.6  2.1  2 mi. NNE of Yucca Valley
        11/21  2:49 am  32 58.8  115 32.8  2.0  1 mi. N of Brawley
        11/21  2:54 am  32 58.9  115 32.1  2.0  	"
        11/21  5:00 am  34 42.3  119  7.0  2.8  12 mi. SW of Frazier Park
        11/21  9:56 pm  35  5.7  117 29.4  2.0  11 mi. NE of Boron
        11/22 10:05 am  34 36.0  116 17.1  2.3  32 mi. N of Joshua Tree
        11/22  9:42 pm  36  4.5  117 38.8  2.1  17 mi. E of Coso Junction
        11/23  8:17 pm  33 26.0  118 44.7  2.0  18 mi. E of Santa Barbara 
						Is.             
        11/24  8:03 pm  33 32.2  117 58.3  2.6  5 mi. SSW of Newport Beach
        11/24  8:36 pm  34  0.9  116 56.7  2.1  5 mi. ESE of Yucaipa
        11/24  8:37 pm  34  1.0  116 56.4  2.2  	"
        11/24  8:43 pm  34  0.8  116 56.7  3.3  6 mi. NNE of Beaumont
						FELT
        11/24 10:25 pm  34 18.4  117 41.7  2.2  2 mi. WNW of Mt. Baldy
        11/25  2:12 am  33 47.7  118 26.1  2.2  1 mi. NNW of Palos Verdes 
						Point
        11/25  6:06 am  34 35.8  116 16.2  2.7  31 mi. N of Joshua Tree
        11/26  1:40 am  36  0.4  117 49.0  2.1  7 mi. ESE of Coso Junction
        11/26  1:41 am  36  0.6  117 48.8  2.5  	"
        11/26  5:19 am  35 15.6  118 33.8  2.4  11 mi. NW of Tehachapi
	-------------------------------------------------------------