Southern California Earthquakes in the Past Week

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

August 13, 1999


The time period covered is 5 pm on Thursday, July 5 (PDT) through 5 pm on Thursday, August 12 (PDT). During this period, we detected and analysed 215 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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 8/5   7:02 pm  34  1.0  116 20.9  2.0  8 mi. SSW of Joshua Tree, CA          
 8/5   7:34 pm  32  1.9  114 42.6  3.3  46 mi. S of Yuma, AZ                  
 8/5   7:39 pm  32  8.3  114 38.9  3.2  38 mi. S of Yuma, AZ                  
 8/5   9:22 pm  36  0.5  117 47.9  2.0  8 mi. ESE of Coso Junction, CA        
 8/5  11:24 pm  32 34.3  116 10.2  2.1  15 mi. SW of Ocotillo, CA             
 8/6  12:08 am  32 31.6  115 26.9  3.0  10 mi. SSE of Calexico, CA            
 8/6   6:15 am  35 43.6  118 28.5  2.0  6 mi. N of town of Lake Isabella, CA  
 8/6   6:27 am  33 43.2  116 50.6  2.0  7 mi. ESE of Hemet, CA                
 8/6   6:43 am  32  2.6  114 40.4  3.2  45 mi. S of Yuma, AZ                  
 8/6  10:48 am  32  4.3  114 39.7  3.3  43 mi. S of Yuma, AZ                  
 8/6  11:27 am  32  5.9  114 37.7  2.5  41 mi. S of Yuma, AZ                  
 8/6  11:44 am  32 34.2  116 10.9  2.4  15 mi. SW of Ocotillo, CA             
 8/6   6:40 pm  34 18.8  116 26.4  2.0  13 mi. N of Yucca Valley, CA          
 8/6   8:40 pm  34  1.6  116 52.1  2.2  5 mi. SSW of Mt. San Gorgonio, CA     
 8/6  11:36 pm  34  6.6  117 26.4  2.2  Under Fontana, CA                   
 8/7  12:25 am  34 18.7  116 26.9  2.0  13 mi. N of Yucca Valley, CA          
 8/7   5:34 am  34 47.3  116 36.7  2.0  24 mi. ESE of Barstow, CA             
 8/7   5:57 am  35 40.8  119 18.1  2.8  27 mi. NW of Bakersfield, CA          
 8/7   9:30 am  35 53.7  118  5.8  2.4  13 mi. SW of Coso Junction, CA        
 8/7   8:00 pm  33 14.0  116 17.4  2.8  5 mi. ESE of Borrego Springs, CA      
 8/7   8:12 pm  32 21.5  115 14.7  2.5  25 mi. SE of Calexico, CA             
 8/8   1:48 pm  32  3.7  114 33.6  2.5  44 mi. S of Yuma, AZ                  
 8/8   2:21 pm  32  4.8  114 35.9  2.8  42 mi. S of Yuma, AZ                  
 8/8   3:29 pm  32  7.2  114 37.5  2.7  39 mi. S of Yuma, AZ                  
 8/8   3:33 pm  32  2.7  114 39.8  2.5  45 mi. S of Yuma, AZ                  
 8/8   3:34 pm  32  4.2  114 39.5  3.5  43 mi. S of Yuma, AZ                  
 8/8   4:07 pm  35 42.6  117 37.2  2.1  6 mi. NNE of Ridgecrest, CA           
 8/8   6:03 pm  32  2.9  114 37.0  2.6  44 mi. S of Yuma, AZ                  
 8/8  10:23 pm  32  7.3  114 41.0  2.7  39 mi. S of Yuma, AZ                  
 8/9   2:01 am  32  0.2  116 11.6  2.4  51 mi. SSW of Ocotillo, CA            
 8/9   2:31 am  32  2.7  114 37.8  2.8  45 mi. S of Yuma, AZ                  
 8/9   5:56 am  33 15.8  116  0.1  3.3  2 mi. WSW of Salton City, CA          
 8/9   6:32 am  36 36.6  117 38.1  3.1  23 mi. E of Lone Pine, CA             
 8/9   4:01 pm  32  8.9  114 36.5  2.7  38 mi. S of Yuma, AZ                  
 8/9  11:33 pm  33 31.6  117 39.6  3.6  1 mi. N of San Juan Capistrano, CA    
 8/10  1:36 am  33 16.2  115 59.7  2.0  1 mi. WSW of Salton City, CA          
 8/10  3:10 am  32  5.1  114 36.8  2.9  42 mi. S of Yuma, AZ                  
 8/10  5:23 am  32  6.1  114 36.2  2.5  41 mi. S of Yuma, AZ                  
 8/10  7:57 am  35 46.4  117 36.2  2.5  11 mi. NNE of Ridgecrest, CA          
 8/10  9:25 am  32  6.4  114 37.9  2.6  40 mi. S of Yuma, AZ                  
 8/10 10:10 am  35 15.8  119  6.6  2.3  9 mi. SW of Bakersfield, CA           
 8/10 11:44 am  33 16.1  116  0.2  3.5  2 mi. WSW of Salton City, CA          
 8/10  1:37 pm  36 25.5  117 59.6  2.1  9 mi. N of Olancha, CA                
 8/10  2:18 pm  33 38.5  116 43.0  2.2  6 mi. NNW of Anza, CA                 
 8/10  4:15 pm  36  0.4  117 48.1  2.1  8 mi. ESE of Coso Junction, CA        
 8/10  7:29 pm  36 27.0  117 51.2  2.8  14 mi. NE of Olancha, CA              
 8/10  8:45 pm  32  4.9  114 38.1  3.3  42 mi. S of Yuma, AZ                  
 8/10  9:22 pm  34 12.8  119 33.0  2.0  12 mi. N of Santa Cruz Is., CA (E end)
 8/10 10:05 pm  34 13.6  119 31.9  2.2  11 mi. S of Carpinteria, CA           
 8/10 11:33 pm  32 12.1  114 33.3  2.6  34 mi. S of Yuma, AZ                  
 8/11  9:08 am  35  8.6  118 20.6  2.0  5 mi. E of Tehachapi, CA              
 8/11  9:13 am  32 16.3  114 40.3  2.5  29 mi. S of Yuma, AZ                  
 8/11 11:11 am  32  0.8  114 39.1  3.2  47 mi. S of Yuma, AZ                  
 8/11 11:53 am  32  5.0  114 38.7  2.9  42 mi. S of Yuma, AZ                  
 8/11 12:21 pm  33 10.2  116  0.9  2.2  8 mi. SSW of Salton City, CA          
 8/11  3:21 pm  33 19.4  118 34.3  2.3  14 mi. W of Avalon, Catalina Island, CA
 8/11  3:53 pm  32  7.1  114 37.0  2.6  40 mi. S of Yuma, AZ                
 8/11  9:32 pm  35 45.9  117 39.0  2.0  9 mi. N of Ridgecrest, CA           
 8/11 10:18 pm  32  1.9  114 38.3  2.8  46 mi. S of Yuma, AZ                
 8/12  2:44 am  36 17.0  118 20.8  2.2  20 mi. S of Mt. Whitney, CA         
 8/12  3:49 am  34 58.2  117  1.6  2.3  5 mi. N of Barstow, CA              
 8/12  5:47 am  34  3.1  117 15.9  2.1  Under Loma Linda, CA                
 8/12  5:50 am  32  5.9  114 36.1  2.5  41 mi. S of Yuma, AZ                
 8/12  7:24 am  34  0.6  117 13.9  2.3  2 mi. SSE of Loma Linda, CA         
 8/12 11:30 am  33  9.2  116 35.2  2.3  5 mi. N of Julian, CA               
 8/12  1:16 pm  32  4.3  114 38.8  3.4  43 mi. S of Yuma, AZ                
 8/12  1:21 pm  32  3.8  114 39.9  3.7  43 mi. S of Yuma, AZ                
 8/12  2:57 pm  36  0.4  117 48.1  2.1  8 mi. ESE of Coso Junction, CA      
 8/12  4:23 pm  33 41.0  116 42.5  2.3  4 mi. S of Idyllwild, CA            
 8/12  4:47 pm  32  3.0  114 37.5  3.0  44 mi. S of Yuma, AZ                
 8/12  4:55 pm  35 43.3  118 28.6  2.1  5 mi. N of town of Lake Isabella, CA
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