Southern California Earthquakes in the Past Week

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

August 9, 2002


The time period covered is 5 pm on Thursday, August 1 (PDT) through 5 pm on Thursday, August 8 (PDT). During this period we dectected and analysed 204 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.


          Mag. Local Date Local Time Lat.      Long.    Depth  Descriptive location

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 9805469  2.5  2002/08/01 19:35:57 33 26.2 N 116 52.6 W 13.9    9 km ( 6 mi) N    of Palomar Observatory, CA  
 9805505  2.6  2002/08/01 22:44:49 32  0.8 N 116 12.5 W  7.0   83 km (51 mi) SSW  of Ocotillo, CA  
 9805513  2.6  2002/08/01 23:22:00 34 21.8 N 118 40.7 W 15.2   10 km ( 6 mi) NNE  of Simi Valley, CA  
               FELT in West Hills, Westlake Village, Valencia & Simi Valley
 9805541  2.4  2002/08/02 01:48:19 36 11.5 N 117 59.3 W  4.0   10 km ( 6 mi) S    of Olancha, CA  
 9805625  2.1  2002/08/02 09:12:54 34 48.3 N 116 16.1 W  6.5   54 km (34 mi) SSW  of Baker, CA  
 9805813  2.6  2002/08/02 20:19:33 35 57.8 N 117 57.3 W  6.5    9 km ( 6 mi) S    of Coso Junction, CA  
 9805881  2.1  2002/08/02 22:47:54 33 34.9 N 117 14.1 W 14.3   13 km ( 8 mi) SE   of Lake Elsinore, CA  
 9805921  2.1  2002/08/03 03:07:16 34 29.6 N 116 20.0 W  4.3   40 km (25 mi) N    of Joshua Tree, CA  
 9805937  2.0  2002/08/03 04:29:43 33  9.9 N 115 36.8 W  4.4    2 km ( 1 mi) ESE  of Obsidian Butte, CA  
 9805941  2.4  2002/08/03 04:41:07 33  9.5 N 115 37.0 W  4.8    2 km ( 1 mi) SE   of Obsidian Butte, CA  
 9806017  2.5  2002/08/03 11:11:29 32 56.3 N 115 31.7 W 18.1    3 km ( 2 mi) SSE  of Brawley, CA  
 9806149  2.1  2002/08/04 04:52:59 33  9.7 N 116 27.6 W 15.2   13 km ( 8 mi) SW   of Borrego Springs, CA  
 9806197  2.6  2002/08/04 11:26:13 34 17.3 N 116 52.8 W  7.3    4 km ( 2 mi) NW   of Big Bear City, CA  
 9806201  2.5  2002/08/04 11:27:04 34 17.4 N 116 52.8 W  7.7    4 km ( 2 mi) NW   of Big Bear City, CA  
 9806209  2.3  2002/08/04 12:09:21 35 45.6 N 116 34.6 W  7.0   37 km (23 mi) SW   of Shoshone, CA  
 9806309  2.2  2002/08/04 21:05:19 34 41.4 N 116 20.4 W  8.3   61 km (38 mi) N    of Joshua Tree, CA  
 9806453  2.0  2002/08/05 09:16:58 36 20.9 N 118  0.3 W  0.2    7 km ( 5 mi) N    of Olancha, CA  
 9806609  2.2  2002/08/05 17:31:16 34 29.2 N 118 38.2 W 18.1    5 km ( 3 mi) SSW  of Castaic Lake dam, CA  
 9806841  2.5  2002/08/06 14:07:03 33  7.7 N 115 36.2 W 13.1    6 km ( 3 mi) SE   of Obsidian Butte, CA  
 9806865  2.0  2002/08/06 15:48:13 34 53.8 N 119  3.1 W 12.6   12 km ( 8 mi) WSW  of Grapevine, CA  
 9807221  2.0  2002/08/07 15:27:48 33 52.8 N 117 29.4 W 13.1    7 km ( 4 mi) E    of Corona, CA  
 9807329  2.5  2002/08/07 20:18:08 33 42.6 N 120  0.7 W  0.1   28 km (17 mi) SSE  of Santa Rosa Is., CA  
 9807345  2.1  2002/08/07 21:32:59 34  0.2 N 117 34.9 W  3.0    9 km ( 6 mi) SE   of Ontario, CA  
 9807405  2.7  2002/08/08 03:25:26 34 10.1 N 117 38.1 W 13.8    7 km ( 4 mi) N    of Upland, CA  
 9807429  2.3  2002/08/08 07:02:41 34  0.1 N 117 34.9 W  3.0    9 km ( 6 mi) SE   of Ontario, CA  
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