November 23, 1993

		Weekly Earthquake Report for Southern California
		------------------------------------------------
 		             November 18 - 22, 1993

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

	This document is a commentary on current seismic activity.  The 
	earthquakes discussed have been detected and processed 
	automatically.  All epicenters and magnitudes have been reviewed 
	to exclude obvious blunders; however, they must still be 
	considered preliminary.  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, November 18, Pacific Standard Time, to midnight Wednesday
	night, November 22, Pacific Standard Time.  This is a shorter week
	due to the upcoming Thanksgiving holiday.  The map includes a 
	virtually complete set of earthquakes of M2.0 or larger, plus many 
	smaller ones that happen to have made it through the data processing.
	There are 216 this time.
		This is yet another dull week.  Nothing reached magnitude 3
	in our reporting area.  Not surprisingly, we didn't get any public 
	inquiries.
		The table lists the quakes that were M2.0 or larger in
	the central part of the coverage area.  Only M2.5 and larger events 
	are listed for south of the U.S./Mexico border, and for the
	Coalinga/Parkfield area.  For more information on the latter, see
	the Northern California Report issued by the U.S.G.S. in Menlo 
	Park.  Times are local times; if you want Greenwich Mean Time, 
	add 8 hrs, to the Pacific Standard Time listed.

	Table 1
	-------
	Date  Time      N Lat.   W Long.   Mag  
	-------------------------------------------------------------
        11/18  3:29 am  33 44.4  117 30.6  2.1   9 mi. SSE of Corona       
        11/18  3:29 am  34 14.8  116 51.7  2.1   1 mi. SSW of Big Bear City
        11/18  4:57 am  34  9.2  116 24.9  2.0   2 mi. NE of Yucca Valley 
        11/18 10:59 am  32 41.7  117  6.9  2.0   6 mi. SE of the I5/I8 
							interch., San Diego 
        11/18 11:16 am  34  2.0  116 19.5  2.7   8 mi. SE of Yucca Valley  
        11/18 12:52 pm  34 10.0  116 26.0  2.0   3 mi. N of Yucca Valley   
        11/18  1:18 pm  34  9.4  116 26.0  2.3   2 mi. NNE of Yucca Valley 
        11/18  2:41 pm  34  8.6  117 35.4  2.3   5 mi. NNW of the I10/I15 
							interchange       
        11/18  3:50 pm  34 25.6  116 32.2  2.1   21 mi. NNW of Yucca Valley    
        11/18  5:12 pm  33 45.9  116 59.6  2.0   1 mi. NW of Hemet             
        11/18  6:32 pm  36  4.2  119 45.9  2.3   31 mi. SW of Visalia          
        11/18  6:37 pm  36  4.1  119 47.3  2.8   32 mi. WSW of Visalia         
        11/19 12:59 am  34  7.6  117  0.3  2.4   7 mi. SE of Running Springs   
        11/19  8:21 am  34 12.4  116 26.0  2.1   6 mi. N of Yucca Valley       
        11/19  8:27 am  35 24.0  119 29.0  2.1   17 mi. N of Taft              
        11/19  9:53 am  34 12.7  116 25.9  2.0   6 mi. N of Yucca Valley       
        11/19 10:18 am  34 12.7  116 25.9  2.1   6 mi. N of Yucca Valley       
        11/19  7:27 pm  33 57.0  116 18.8  2.8   10 mi. E of Desert Hot Springs
        11/19  7:42 pm  34 23.0  116 27.2  2.3   18 mi. N of Yucca Valley      
        11/20  3:47 am  34 23.4  116 27.8  2.3   18 mi. N of Yucca Valley      
        11/20  4:06 am  36 16.7  119 40.3  2.1   21 mi. W of Visalia           
        11/20  4:22 am  34 28.6  116 45.1  2.1   11 mi. ENE of Lucerne Valley  
        11/20  5:39 am  33 55.8  116 18.5  2.0   11 mi. E of Desert Hot Springs
        11/20  7:46 am  34 28.8  118 26.8  2.0   8 mi. NNE of Newhall     
        11/20 10:26 am  35 18.4  118 35.9  2.1   14 mi. NW of Tehachapi   
        11/20  5:12 pm  34  2.8  118 54.7  2.2   1 mi. E of Leo Carrillo State
							Beach      
        11/20 10:51 pm  32 42.0  118  6.9  2.0   15 mi. ESE of SE tip of San 
							Clemente Is.    
        11/20 11:46 pm  33 29.8  116 27.9  2.2   12 mi. ESE of Anza          
        11/21 12:50 am  34  4.0  116 21.6  2.1   6 mi. SE of Yucca Valley    
        11/21  9:49 am  34 25.8  116 29.6  2.0   21 mi. N of Yucca Valley    
        11/21  1:18 pm  34 12.8  116 25.9  2.0   6 mi. N of Yucca Valley     
        11/21  2:01 pm  34 19.3  116 28.7  2.2   14 mi. N of Yucca Valley    
        11/21  6:09 pm  35 57.4  115 37.1  2.3   36 mi. E of Shoshone        
        11/21  6:20 pm  34 58.9  116 58.6  2.1   6 mi. NNE of Barstow        
        11/21  7:23 pm  32 40.1  115 54.7  2.2   6 mi. SE of Ocotillo        
        11/21  8:28 pm  34 33.2  116 33.2  2.1   23 mi. ENE of Lucerne Valley
        11/22 12:54 am  34 16.3  116 54.1  2.2   2 mi. NNE of town of Big Bear
							Lake         
        11/22  7:36 am  34 10.5  116 26.2  2.5   3 mi. N of Yucca Valley     
        11/22  7:58 am  34 10.2  116 26.2  2.4   3 mi. N of Yucca Valley     
        11/22  8:55 am  34 37.3  116 36.6  2.0   22 mi. ENE of Lucerne Valley
        11/22 11:59 am  34 35.2  116 34.6  2.0   23 mi. ENE of Lucerne Valley
        11/22  2:04 pm  34 15.9  116 23.7  2.2   10 mi. NNE of Yucca Valley
        11/22  8:09 pm  34 14.4  116 25.5  2.7   8 mi. N of Yucca Valley
       	-------------------------------------------------------------
	
	Figure. 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.