Southern California Earthquakes in the Past Week

Nick Scheckel , Seismological Laboratory
Lucy Jones, U. S. Geological Survey
California Institute of Technology

July 9, 1999


The time period covered is 5 pm on Thursday, July 1 (PDT) through 5 pm on Thursday, July 8 (PDT). During this period, we detected and analysed 172 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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 7/ 1  5:36 pm  34 36.8  116 39.9  2.1  19 mi. NE of Lucerne Valley, CA            
 7/ 1  8:10 pm  35  5.6  118 18.6  2.0  8 mi. ESE of Tehachapi, CA                 
 7/ 1  8:30 pm  36  1.1  117 42.0  2.2  14 mi. E of Coso Junction, CA             
 7/ 2  6:27 am  35  5.5  118 18.8  2.0  8 mi. ESE of Tehachapi, CA                 
 7/ 2  6:29 am  32 50.0  115 37.5  2.0  5 mi. WNW of El Centro, CA                 
 7/ 2  5:20 pm  33 57.8  116 49.4  2.3  3 mi. NW of Cabazon, CA                   
 7/ 3 11:46 am  34 22.3  116 28.1  2.6  17 mi. N of Yucca Valley, CA              
 7/ 3  1:06 pm  32 48.9  117 26.3  2.0  10 mi. WSW of La Jolla, CA                  
 7/ 3  4:51 pm  33 48.1  118 27.1  2.0  2 mi. NW of Palos Verdes Point, CA        
 7/ 3  5:55 pm  33 10.6  115 33.3  2.4  4 mi. NW of Calipatria, CA                
 7/ 3 10:31 pm  34 54.9  119  2.6  2.6  6 mi. WSW of Grapevine, CA                 
 7/ 4  4:32 pm  34  9.7  117 43.8  2.2  3 mi. N of Claremont Colleges, CA        
 7/ 4  9:21 pm  34 12.1  117 24.7  2.7  1 mi. SSW of Devore, CA                    
 7/ 4  9:57 pm  32 20.6  117 28.2  2.4  28 mi. WSW of San Ysidro, CA                
 7/ 4 11:28 pm  33  4.6  117 52.0  2.0  27 mi. SSW of Dana Point, CA                
 7/ 5  3:59 am  33 10.8  115 36.7  2.4  1 mi. ENE of Obsidian Butte, CA            
 7/ 5 12:01 pm  33 17.0  115 39.4  2.0  6 mi. SE of Bombay Beach, CA              
 7/ 5  4:20 pm  34 27.3  118  0.8  2.0  10 mi. SSE of Palmdale, CA                  
 7/ 5 10:23 pm  35 27.9  120  1.1  2.1  7 mi. N of Simmler, CA                   
 7/ 6 12:49 am  33 11.2  115 34.0  2.7  4 mi. SW of Niland, CA                    
 7/ 6  3:20 am  33 20.5  116 11.6  2.0  11 mi. ENE of Borrego Springs, CA           
 7/ 6 11:23 am  32 35.3  116  9.9  2.5  14 mi. SW of Ocotillo, CA                  
 7/ 6 12:02 pm  36  0.2  117 57.9  2.0  3 mi. SSW of Coso Junction, CA             
 7/ 6 12:46 pm  33 33.5  117 42.1  2.1  2 mi. NNE of Laguna Niguel, CA             
 7/ 6  5:29 pm  32 29.2  115 20.1  2.4  15 mi. SE of Calexico, CA                  
 7/ 6 11:48 pm  35 11.0  118 36.4  2.4  9 mi. WNW of Tehachapi, CA                 
 7/ 7  3:50 am  33  2.9  116  1.1  2.0  9 mi. SE of Ocotillo Wells, CA            
 7/ 7  5:41 am  34 58.4  117  1.6  2.6  5 mi. N of Barstow, CA                   
 7/ 7 11:53 am  34 58.3  116 48.2  2.9  13 mi. ENE of Barstow, CA                   
 7/ 7  1:12 pm  33 10.9  115 33.8  2.5  4 mi. SW of Niland, CA                    
 7/ 7 11:33 pm  34 18.2  116 51.8  2.2  2 mi. NNW of Big Bear City, CA             
 7/ 8 12:09 am  32 54.5  115 52.5  2.1  13 mi. NNE of Ocotillo, CA                  
 7/ 8 12:28 am  35 25.7  119 59.4  2.6  5 mi. N of Simmler, CA                   
 7/ 8 12:38 am  32 16.4  116 26.8  2.8  41 mi. SW of Ocotillo, CA                  
 7/ 8  4:20 pm  32 36.5  116  8.5  2.0  12 mi. SW of Ocotillo, CA                  
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