January 19, 1995

		Weekly Earthquake Report for Southern California
		------------------------------------------------
         		     January 12 - 18, 1995

	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 818-395-6326.  For daily updates, call 
	our Earthquake Information Hotline: 818-395-6977.
			--------------------------------
	This week's Report covers the time period from midnight Thursday
	morning, January 12, Pacific Standard Time, to midnight 
	Wednesday night, January 18, 1995, Pacific Standard Time.  We 
	recorded 239 earthquakes of M1.0 or larger during the 7-day period 
	covered.
		It was a relatively quiet week, with the seismicity
	running about twice what it was before the Landers and Northridge
	sequences.  There was a M3.1 Landers aftershock last Thursday
	afternoon north of Yucca Valley, which was felt, followed later in 
	the afternoon by a M2.9 in the Carpinteria area, which was also felt.
	Then, on Sunday afternoon, there was another Landers aftershock, 
	M3.2, near Barstow.  On Sunday evening, there was a M3.1 offshore
	of the Pt. Arguello area.  Early next morning, there was a M3.0
	near San Fernando, which the local residents apparently managed to 
	sleep though.  The Barstow M3.2 was the largest.
		The largest quake (in our area, that is!) on the first
	anniversary of the Northridge quake was M2.5, and it was a Landers
	aftershock.  For those who are curious, there were 11,101 Northridge
	events recorded during the first year of the sequence.
		The table 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  
	-------------------------------------------------------------
         1/12  8:47 am  34 16.9  118 32.8  2.1  3 mi. NNW of Northridge
         1/12 11:17 am  33 20.1  116 14.5  2.1  9 mi. NE of Borrego Springs
         1/12  2:06 pm  34 46.6  116 34.9  2.0  26 mi. ESE of Barstow
         1/12  2:50 pm  34  0.5  116 19.3  3.1  10 mi. SE of Yucca Valley
						FELT
         1/12  5:16 pm  34 15.4  119 30.8  2.9  9 mi. S of Carpinteria
						FELT
         1/12  6:01 pm  34 20.2  116 55.5  2.4  6 mi. N of town of Big Bear
         1/12  7:00 pm  35 59.6  117 55.1  2.3  3 mi. SSE of Coso Junction
         1/13  3:49 am  33 59.2  118 27.2  2.2  1 mi. NNW of Marina del Rey
         1/13  7:09 am  34 23.6  119 18.2  2.0  4 mi. SW of Ojai
         1/13  8:32 am  33 29.4  116 30.5  2.2  10 mi. ESE of Anza
         1/13  2:25 pm  35  3.0  117 23.5  2.3  23 mi. WNW of Barstow
         1/13  5:41 pm  34  9.9  118 41.2  2.3  5 mi. WSW of Canoga Park
         1/14 12:17 am  34 47.4  116 17.6  2.0  35 mi. SSW of Baker
         1/14 12:53 am  35 51.4  117 44.0  2.2  16 mi. NNW of Ridgecrest
         1/14  2:47 am  34  1.5  116 19.6  2.4  9 mi. SE of Yucca Valley
         1/14  9:38 am  33 52.4  118 11.8  2.0  Lakewood/Compton area, near
						the I710/91 interchange
         1/14 10:42 am  33 52.2  118 10.0  2.5  	"
         1/14  4:47 pm  33 20.4  117 16.8  2.7  11 mi. NNE of Oceanside
         1/14  6:02 pm  36  3.7  120 49.6  2.6  24 mi. WNW of Parkfield
         1/15  4:08 am  34 22.4  118 42.0  2.0  6 mi. N of Simi Valley
         1/15  8:15 am  33 52.5  118 10.3  2.4  Near the I710/91 interchange
         1/15  9:50 am  34 57.6  116 56.6  2.0  7 mi. NE of Barstow
         1/15  9:59 am  34 58.7  116 56.6  2.0  	"
         1/15  1:56 pm  34 59.2  116 56.6  3.2  	"
         1/15  2:06 pm  34 59.0  116 56.6  2.3  	"
         1/15  4:18 pm  33 49.5  116 24.5  2.3  7 mi. N of Palm Desert
         1/15  8:54 pm  34 36.0  120 53.2  3.1  13 mi. W of Pt. Arguello
         1/16  2:52 am  35 16.8  118 34.7  2.2  12 mi. NW of Tehachapi
         1/16  4:15 am  34 18.2  118 27.1  3.0  1 mi. NW of San Fernando
         1/16  4:55 am  34 17.7  118 27.3  2.1  	"
         1/16  1:47 pm  34 47.4  118 55.3  2.0  2 mi. SSE of Frazier Park
         1/16  4:15 pm  36  6.7  117 50.8  2.2  5 mi. ESE of Haiwee Reservoir
         1/16  7:56 pm  34 22.1  116 28.0  2.3  17 mi. N of Yucca Valley
         1/16  8:34 pm  34  1.1  116 56.4  2.3  6 mi. NNE of Beaumont
         1/16  9:47 pm  34 22.3  116 27.9  2.2  17 mi. N of Yucca Valley
         1/16 11:39 pm  34 22.2  116 27.6  2.2  	"
         1/17  7:25 am  34  0.8  116 19.3  2.1  10 mi. SE of Yucca Valley
         1/17  7:36 pm  34 18.3  116 27.0  2.1  12 mi. N of Yucca Valley
         1/17 11:13 pm  34 22.4  116 28.0  2.5  17 mi. N of Yucca Valley
         1/18  3:34 am  34  0.6  116 19.2  2.3  10 mi. SE of Yucca Valley
         1/18  4:49 am  34 34.3  116 34.2  2.0  23 mi. ENE of Lucerne Valley
         1/18  8:57 am  34 24.5  116 28.2  2.7  20 mi. N of Yucca Valley
         1/18  3:07 pm  34 34.1  120 58.0  2.5  18 mi. W of Pt. Arguello
         1/18 10:10 pm  34 14.6  117 32.2  2.1  7 mi. ESE of Mt. Baldy
         1/18 10:42 pm  34  0.5  116 19.3  2.4  10 mi. SE of Yucca Valley
        -------------------------------------------------------------

        Figure 1. A map of southern California showing the earthquakes
        recorded during the past week by the Caltech/USGS Seismic
        Network.  Major faults are marked, as well as the metropolitan
        areas of Los Angeles (L.A.), Palm Springs (P.S.), San Diego
        (S.D.), and Santa Barbara (S.B.).  The circles denote the
	earthquakes, the size of the circle indicating the magnitude.