Southern California Earthquakes in the Past Week

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

August 11, 2000


The time period covered is 5 pm on Thursday, August 3 (PDT) through 5 pm on Thursday, August 4 (PDT). During this period we dectected and analysed 274 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. 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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 8/4   5:34 am  34 26.7  116 15.2  2.4  21 mi. N of Joshua Tree, CA       
 8/4   7:46 am  32 43.3  115 55.5  2.0  4 mi. ESE of Ocotillo, CA         
 8/4  11:50 am  34 41.3  118 34.4  2.0  11 mi. NNE of Castaic Lake dam, CA
 8/4  11:36 pm  34 22.7  118 37.6  2.0  3 mi. WSW of Valencia, CA         
 8/5   2:12 am  34 42.2  116 18.0  2.1  39 mi. N of Joshua Tree, CA       
 8/5   4:45 am  34 40.4  116 17.7  2.0  37 mi. N of Joshua Tree, CA       
 8/5  10:11 am  34 16.6  119  9.1  2.1  5 mi. NNE of Oxnard, CA           
 8/5  11:04 am  32  5.1  115 44.0  2.5  42 mi. SSW of Calexico, CA        
 8/5   3:34 pm  33  7.5  117 53.2  2.3  25 mi. SSW of Dana Point, CA      
 8/5   9:26 pm  33 59.2  116 59.7  2.1  3 mi. SE of Yucaipa, CA           
 8/5   9:45 pm  34 24.9  116 29.3  2.0  20 mi. N of Yucca Valley, CA      
 8/6  12:24 am  34 15.3  116 52.8  2.2  1 mi. WSW of Big Bear City, CA    
 8/6   1:54 am  34 22.2  118 41.5  2.0  6 mi. N of Simi Valley, CA        
 8/6   9:11 am  33 10.9  115 34.1  2.2  4 mi. ENE of Obsidian Butte, CA   
 8/6   4:34 pm  33 57.8  117 13.8  2.3  5 mi. SSE of Loma Linda, CA       
 8/6   6:12 pm  33 30.4  116 26.6  2.1  15 mi. SSW of Palm Desert, CA     
 8/6  11:50 pm  33 58.5  117 14.3  2.1  5 mi. S of Loma Linda, CA         
 8/7   4:57 am  34 24.1  116 30.6  2.3  19 mi. N of Yucca Valley, CA      
 8/7   7:07 am  35 39.7  117 37.7  2.0  3 mi. NE of Ridgecrest, CA        
 8/7   3:10 pm  36  4.1  117 35.3  2.1  20 mi. E of Coso Junction, CA     
 8/7   7:19 pm  33 59.0  116 19.6  2.4  10 mi. S of Joshua Tree, CA       
 8/7  10:01 pm  34  2.5  117  0.8  2.2  1 mi. ENE of Yucaipa, CA          
 8/8   6:23 am  34 20.6  118 34.1  2.0  3 mi. S of Valencia, CA           
 8/8  10:55 am  34 39.2  116 17.2  2.0  35 mi. N of Joshua Tree, CA       
 8/8  12:42 pm  34 33.6  116 16.5  2.7  29 mi. N of Joshua Tree, CA       
 8/8   4:38 pm  33 45.1  116 45.8  2.4  2 mi. W of Idyllwild, CA          
 8/8   9:55 pm  32 35.8  115 18.4  2.1  12 mi. ESE of Calexico, CA        
 8/9   6:13 am  34 40.5  116 17.4  3.1  37 mi. N of Joshua Tree, CA       
 8/9   6:30 am  34 40.6  116 17.6  2.7  37 mi. N of Joshua Tree, CA       
 8/9   7:19 am  33 29.0  116 29.4  2.2  11 mi. ESE of Anza, CA            
 8/9   9:32 am  33 42.5  118 36.4  2.3  11 mi. WSW of Palos Verdes Point, CA
 8/9   3:08 pm  34 40.3  116 17.6  2.1  36 mi. N of Joshua Tree, CA       
 8/9   6:33 pm  34 18.1  116  7.9  2.3  12 mi. NNW of Twentynine Palms, CA
 8/9  10:49 pm  33 14.4  116  6.0  2.1  6 mi. NNE of Ocotillo Wells, CA   
 8/9  11:22 pm  36  3.5  117 52.0  2.4  4 mi. E of Coso Junction, CA      
 8/9  11:43 pm  34 36.1  116 36.3  2.4  22 mi. ENE of Lucerne Valley, CA  
 8/10  7:15 am  35  7.6  120 51.2  3.5  12 mi. W of Pismo Beach, CA       
                                        FELT in the Pismo Beach, San Luis
					Obispo area
 8/10  9:03 am  34 27.9  116 31.1  2.1  24 mi. N of Yucca Valley, CA      
 8/10  9:51 am  34 34.9  116 16.1  2.3  30 mi. N of Joshua Tree, CA       
 8/10  9:59 am  34 35.0  116 16.2  2.8  30 mi. N of Joshua Tree, CA       
 8/10  1:24 pm  34 42.4  116 22.1  2.2  39 mi. N of Joshua Tree, CA       
 8/10  3:54 pm  34  6.8  117 30.0  2.1  3 mi. W of Fontana, CA            
 8/10  4:57 pm  33 57.2  117 12.0  2.1  7 mi. S of Redlands, CA           
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