Southern California Earthquakes in the Past Week

Kate Hutton , Seismological Laboratory
Lucy Jones, U. S. Geological Survey
California Institute of Technology

September 3, 1999


The time period covered is 5 pm on Thursday, September 2 (PDT) through 5 pm on Thursday, September 9 (PDT). During this period, we detected and analysed 162 earthquakes. Click here to see a map.

The table below lists the quakes during the past week that were M2.0 or larger in the central part of the coverage area. In the perepheral areas, quakes larger than M2.5 are listed. 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.

Date  Time      Lat.     Long.     Mag. Descriptive location
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 9/2   7:41 pm  33 47.4  116  8.2  2.0  6 mi. NE of Indio, CA               
 9/2  10:46 pm  36 13.5  117 52.3  2.0  8 mi. ESE of Olancha, CA            
 9/2  11:35 pm  35 44.8  118 28.8  3.0  7 mi. N of town of Lake Isabella, CA
 9/3   3:27 am  33 24.1  116 53.9  2.4  3 mi. NNW of Palomar Observatory, CA
 9/3  12:49 pm  35 45.4  118  1.3  2.8  20 mi. SSW of Coso Junction, CA     
 9/3   2:10 pm  32 37.5  116  8.2  3.7  11 mi. SW of Ocotillo, CA           
 9/3   3:56 pm  32 50.7  116 33.3  2.3  16 mi. S of Julian, CA              
 9/3   7:44 pm  34 22.6  116 27.7  2.3  17 mi. N of Yucca Valley, CA        
 9/4   4:50 am  34 23.8  118 36.2  2.0  2 mi. W of Valencia, CA             
 9/4   4:55 am  35 59.6  117 50.0  2.1  7 mi. ESE of Coso Junction, CA      
 9/4   1:27 pm  34 23.2  118 34.1  2.0  Under Valencia, CA                  
 9/4   6:17 pm  32  2.7  114 41.3  3.0  45 mi. S of Yuma, AZ                
 9/4   6:43 pm  32  4.8  114 37.5  2.7  42 mi. S of Yuma, AZ                
 9/4   8:55 pm  32  3.8  114 37.1  2.5  43 mi. S of Yuma, AZ                
 9/4  10:07 pm  32  2.3  114 39.1  2.5  45 mi. S of Yuma, AZ                
 9/4  10:26 pm  32  6.5  114 36.1  2.6  40 mi. S of Yuma, AZ                
 9/5   9:43 am  34 16.4  118 33.8  2.1  2 mi. ENE of Chatsworth, CA         
 9/5   3:22 pm  36  5.3  117 52.5  2.0  5 mi. NE of Coso Junction, CA       
 9/5   3:22 pm  36  5.4  117 52.8  2.2  4 mi. NE of Coso Junction, CA       
 9/5   6:28 pm  32  0.0  114 40.8  3.0  48 mi. S of Yuma, AZ                
 9/6   9:29 am  34  2.0  116 19.4  2.2  7 mi. S of Joshua Tree, CA          
 9/6  11:31 pm  32  8.1  114 37.9  2.5  38 mi. S of Yuma, AZ                
 9/7  12:01 am  32  8.2  114 40.6  2.7  38 mi. S of Yuma, AZ                
 9/7  12:02 am  32  5.5  114 35.9  2.5  41 mi. S of Yuma, AZ                
 9/7   5:53 am  32  6.7  114 36.6  2.6  40 mi. S of Yuma, AZ                
 9/7   9:42 am  33 20.3  116 12.6  3.4  11 mi. ENE of Borrego Springs, CA   
 9/7   9:53 am  34 35.1  116 37.6  2.2  20 mi. ENE of Lucerne Valley, CA    
 9/7   3:37 pm  35 26.3  118 18.9  2.4  16 mi. SSE of town of Lake Isabella, CA
 9/7   4:03 pm  34 23.3  118 45.4  2.0  8 mi. NNW of Simi Valley, CA         
 9/7   8:28 pm  32 45.6  115 26.1  2.0  7 mi. NNE of Calexico, CA            
 9/8   1:19 am  33 50.2  118 27.3  2.4  4 mi. SW of Manhattan Beach, CA      
                                        FELT in Redondo Beach
 9/8   4:18 am  32  3.0  114 42.1  3.0  45 mi. S of Yuma, AZ                 
 9/8   5:46 am  33  5.1  117 56.1  2.0  28 mi. SSW of Dana Point, CA         
 9/8   1:47 pm  34 22.3  116 27.1  2.1  17 mi. N of Yucca Valley, CA         
 9/8   2:52 pm  36  3.2  117 38.2  2.2  17 mi. E of Coso Junction, CA        
 9/8   3:40 pm  34  2.7  116 45.4  2.2  5 mi. SE of Mt. San Gorgonio, CA     
 9/8   3:49 pm  33 21.1  116 55.9  2.2  3 mi. W of Palomar Observatory, CA   
 9/9   3:59 am  33 15.1  116 24.2  2.0  1 mi. W of Borrego Springs, CA       
 9/9   8:07 am  35 50.9  117 49.5  2.2  15 mi. SSE of Coso Junction, CA      
 9/9   1:48 pm  35 45.2  118  1.0  2.2  20 mi. S of Coso Junction, CA        
 9/9   3:27 pm  32  3.4  114 40.3  2.7  44 mi. S of Yuma, AZ                 
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