Southern California Earthquakes in the Past Week

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

March 19, 1999


The time period covered is 4 pm on Thursday, March 11 (PST) through 4 pm on Thursday, March 18 (PST). During this period, we detected and analysed 185 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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 3/11  5:47 pm  33 43.3  120  1.2  2.6  16 mi. SSE of Santa Rosa Is., CA
 3/11  9:59 pm  36  5.6  117 52.4  2.1  5 mi. NE of Coso Junction, CA   
 3/11 11:05 pm  33  0.3  117 42.3  2.0  22 mi. SW of Oceanside, CA      
 3/12  1:07 am  36  3.9  117 50.3  2.2  6 mi. ENE of Coso Junction, CA  
 3/12  7:30 pm  33 14.4  116 13.7  2.6  8 mi. NW of Ocotillo Wells, CA  
 3/13  5:31 am  32 35.3  116 10.0  4.3  14 mi. SW of Ocotillo, CA; FELT in 
                                        El Centro
 3/13  6:22 am  34 44.3  116 54.4  2.5  12 mi. SSE of Barstow, CA       
 3/13 10:16 am  33 39.0  116 42.5  2.2  6 mi. S of Idyllwild, CA        
 3/13 11:59 am  32 35.0  116  9.3  2.1  14 mi. SW of Ocotillo, CA       
 3/13 10:28 pm  33 26.6  116 24.1  2.2  13 mi. N of Borrego Springs, CA 
 3/14  6:45 am  35 41.3  118 27.2  2.9  3 mi. NNE of town of Lake Isabella, CA
 3/14  8:49 am  32 20.6  115 13.3  3.0  27 mi. SE of Calexico, CA        
 3/14 10:44 pm  32 25.5  115 22.6  2.5  18 mi. SSE of Calexico, CA       
 3/15 12:56 am  32 25.3  115 22.4  2.9  18 mi. SSE of Calexico, CA       
 3/15  7:14 am  34 36.1  116 37.0  2.4  21 mi. ENE of Lucerne Valley, CA 
 3/15  8:24 am  33 38.3  119  3.6  3.1  11 mi. N of Santa Barbara Is. , CA
 3/15 10:37 am  34 36.0  116 38.7  2.3  20 mi. ENE of Lucerne Valley, CA  
 3/15  1:08 pm  35 46.8  117 38.8  2.7  10 mi. N of Ridgecrest, CA        
 3/15  5:34 pm  34  8.9  116 25.6  2.1  2 mi. NNE of Yucca Valley, CA     
 3/16  4:26 am  35 20.8  118 33.0  2.2  16 mi. NNW of Tehachapi, CA       
 3/16  6:47 pm  35  1.5  117  5.0  2.0  10 mi. NNW of Barstow, CA         
 3/16  8:03 pm  32 35.3  116  9.1  2.1  13 mi. SW of Ocotillo, CA         
 3/16  8:07 pm  32 58.3  115 31.9  2.2  Under Brawley, CA                 
 3/17  4:49 am  34 20.6  116 30.6  2.0  15 mi. NNW of Yucca Valley, CA    
 3/17  4:45 pm  34 20.3  116 27.8  2.1  15 mi. N of Yucca Valley, CA      
 3/17  8:20 pm  32 41.9  116  0.0  2.0  2 mi. S of Ocotillo, CA           
 3/18  1:49 am  32  8.6  116 59.1  2.8  28 mi. S of San Ysidro, CA        
 3/18  3:22 am  33 38.7  117 54.0  2.1  2 mi. NE of Newport Beach, CA     
 3/18  8:41 am  35 55.3  119 20.3  2.3  21 mi. WSW of Porterville, CA     
 3/18 11:18 am  34 25.8  116 29.2  2.2  21 mi. N of Yucca Valley, CA      
 3/18  1:50 pm  32 36.0  116  8.7  2.3  12 mi. SW of Ocotillo, CA         
 3/18  1:51 pm  32 35.5  116  8.7  2.2  13 mi. SW of Ocotillo, CA         
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