Southern California Earthquakes in the Past Week

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

February 26, 1999


The time period covered is 4 pm on Thursday, February 18 (PST) through 4 pm on Thursday, February 25 (PST). During this period, we detected and analysed 186 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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 2/18  4:55 pm  34 18.9  118 25.0  2.5  2 mi. NNE of San Fernando, CA  
 2/18  7:08 pm  32 35.5  116  9.9  4.2  14 mi. SW  of Ocotillo, CA; FELT
 2/18  7:22 pm  32 36.2  116  9.2  3.5  13 mi. SW  of Ocotillo, CA; FELT
 2/18  7:51 pm  34  3.3  117 15.9  2.0  Under Loma Linda, CA           
 2/18 10:00 pm  33 10.9  115 36.1  2.2  2 mi. ENE of Obsidian Butte, CA
 2/18 11:47 pm  33 13.2  115 41.4  2.6  4 mi. NW  of Obsidian Butte, CA
 2/19  6:04 am  34 12.0  116 49.6  2.1  4 mi. SSE of Big Bear City, CA 
 2/19  8:27 am  33 12.0  115 59.2  3.5  5 mi. SSW of Salton City, CA   
 2/19  8:58 am  34 50.3  118 56.8  3.4  1 mi. N   of Frazier Park, CA; FELT
 2/19  9:01 am  34 50.6  118 57.1  2.3  1 mi. NNW of Frazier Park, CA  
 2/19  9:08 am  34 50.3  118 57.4  2.4  1 mi. NNW of Frazier Park, CA  
 2/19  9:20 am  34 50.3  118 57.1  2.3  1 mi. NNW of Frazier Park, CA  
 2/19  9:53 am  32 14.5  115 47.8  2.7  34 mi. SSW of Calexico, CA     
 2/19  5:43 pm  32 25.7  115 23.1  2.2  17 mi. SSE of Calexico, CA     
 2/19  7:31 pm  33 11.1  115 35.8  2.1  2 mi. ENE of Obsidian Butte, CA
 2/19 11:57 pm  33 42.2  116 49.2  2.0  6 mi. WSW of Idyllwild, CA     
 2/19 11:57 pm  33 41.9  116 50.3  2.2  7 mi. WSW of Idyllwild, CA     
 2/20  1:43 am  32 24.4  115 19.8  2.2  20 mi. SSE of Calexico, CA     
 2/20  6:22 am  34 27.2  116 30.4  2.0  23 mi. N   of Yucca Valley, CA 
 2/20  6:45 am  34 31.3  120 53.9  2.5  14 mi. WSW of Pt. Arguello, CA 
 2/20 12:30 pm  34 16.8  120 58.4  2.4  27 mi. SW  of Pt. Arguello, CA 
 2/20  3:47 pm  34 13.9  116 50.9  2.0  2 mi. S   of Big Bear City, CA 
 2/21 10:55 am  34 18.8  116 26.2  2.0  13 mi. N   of Yucca Valley, CA 
 2/21  3:55 pm  33 55.8  116 20.4  2.2  9 mi. ESE of Desert Hot Springs, CA
 2/21  9:19 pm  32 15.8  115 37.9  2.3  29 mi. SSW of Calexico, CA    
 2/22  8:04 am  33 42.1  116 46.7  2.5  4 mi. SW  of Idyllwild, CA    
 2/22  9:12 am  32 42.8  115 54.5  2.1  5 mi. ESE of Ocotillo, CA     
 2/22 10:57 pm  34 48.1  120 56.9  2.6  17 mi. WSW of Pt. Sal, CA     
 2/23  8:00 am  34  3.6  117 30.0  2.0  4 mi. SW  of Fontana, CA      
 2/23  1:31 pm  32 35.2  117  3.8  2.6  2 mi. NNW of San Ysidro, CA   
 2/23  3:55 pm  33 56.3  116 57.2  2.1  1 mi. ENE of Beaumont, CA     
 2/23  7:24 pm  32 42.7  115 54.7  2.3  4 mi. ESE of Ocotillo, CA     
 2/24 12:38 am  36  5.0  117 35.5  2.6  20 mi. E   of Coso Junction, CA
 2/24  2:40 am  32 35.7  116  9.4  2.0  13 mi. SW  of Ocotillo, CA     
 2/24  7:29 am  32 15.3  115 46.9  2.0  33 mi. SSW of Calexico, CA     
 2/24  5:51 pm  34 20.2  116 28.2  2.4  15 mi. N   of Yucca Valley, CA 
 2/24  5:59 pm  34 20.5  116 28.0  2.2  15 mi. N   of Yucca Valley, CA 
 2/25 12:19 am  35 28.3  118 44.0  2.0  19 mi. NNE of Arvin, CA        
 2/25  4:17 am  34  7.9  117 24.2  2.3  2 mi. NE  of Fontana, CA       
 2/25  6:10 am  35 28.6  118 44.5  2.4  16 mi. ENE of Bakersfield, CA  
 2/25  7:10 am  33 11.2  115 33.8  2.6  4 mi. SW  of Niland, CA        
 2/25  7:12 am  33 11.3  115 34.0  2.0  4 mi. SW  of Niland, CA        
 2/25  7:59 am  35 28.1  118 44.3  2.3  18 mi. NNE of Arvin, CA        
 2/25  9:51 am  34  0.9  117 14.4  2.2  2 mi. SSE of Loma Linda, CA    
 2/25 10:27 am  33 13.5  116 46.8  2.4  1 mi. SW  of Lake Henshaw, CA  
 2/25 11:20 am  34 58.6  119  0.2  2.4  3 mi. WSW of Wheeler Ridge, CA 
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