Southern California Earthquakes in the Past Week

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

October 23, 1998


The time period covered is 5 pm on Thursday, October 15, through 5 pm on Thursday, October 22. During this period, we detected and analysed 190 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(PDT) Lat.     Long.     Mag. Descriptive location
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10/15  6:48 pm  34 48.8  120 21.1  2.9  10 mi. SSE of Santa Maria, CA
10/15  7:25 pm  32 47.7  115 26.7  2.6  6 mi. E of El Centro, CA
10/15  7:29 pm  32 47.3  115 26.7  2.1  6 mi. E of El Centro, CA
10/16  7:09 am  33 43.3  118  3.1  2.2  2 mi. NNW of Bolsa Chica Beach, CA
10/16 12:51 pm  34 18.4  118 27.6  2.0  2 mi. NW of Pacoima, CA
10/16  2:29 pm  33 16.8  116 17.2  2.0  5 mi. ENE of Borrego Springs, CA
10/16  7:18 pm  32  4.5  115 25.2  2.7  41 mi. S of Calexico, CA
10/17  1:12 am  34 11.9  118 34.0  2.0  1 mi. W of Reseda, CA
10/17  2:52 am  33 34.6  118 15.1  2.2  9 mi. SSE of Pt. Fermin, San Pedro, CA
10/17  4:58 am  34 18.4  116 59.4  2.1  6 mi. NW of town of Big Bear Lake, CA
10/17  8:16 am  34 14.8  116 26.3  2.0  8 mi. N of Yucca Valley, CA
10/17 10:09 am  33 16.8  116 17.3  2.2  5 mi. ENE of Borrego Springs, CA
10/17 10:29 am  33 13.6  116  5.5  2.4  6 mi. NNE of Ocotillo Wells, CA
10/17 11:52 am  34 20.3  118 25.9  2.1  3 mi. N of San Fernando, CA
10/17 11:00 pm  34 13.7  116 45.6  2.7  5 mi. ESE of Big Bear City, CA
10/17 11:20 pm  34 13.8  116 45.5  2.6  5 mi. ESE of Big Bear City, CA
10/17 11:34 pm  32  4.9  115 25.4  2.7  40 mi. S of Calexico, CA
10/18 12:53 am  34 47.2  118 56.0  2.5  2 mi. SSE of Frazier Park, CA
10/18  2:13 am  33 11.4  115 34.4  2.0  3 mi. ENE of Obsidian Butte, CA
10/18  4:42 am  34 12.1  118 39.9  2.6  3 mi. W of Canoga Park, CA; FELT
10/18 11:21 am  32  4.5  115 25.2  3.1  41 mi. S of Calexico, CA
10/18 12:38 pm  32  2.2  115 24.6  3.6  43 mi. S of Calexico, CA
10/18  7:03 pm  34 18.1  118 28.3  2.6  2 mi. NW of Pacoima, CA
10/18  8:59 pm  32  3.1  115 24.5  2.8  42 mi. S of Calexico, CA
10/18  9:27 pm  34 58.8  119 17.7  2.1  14 mi. SE of Taft, CA
10/18 11:06 pm  32  1.0  115 25.2  3.6  45 mi. S of Calexico, CA
10/19  2:32 am  35 42.9  117 40.4  2.5  6 mi. N of Ridgecrest, CA
10/19  3:57 am  33 19.9  118 42.1  2.0  21 mi. NNW of San Clemente Is., CA
10/19  6:36 am  33 29.3  116 29.2  2.2  11 mi. ESE of Anza, CA
10/19  6:55 am  35 47.3  117 39.0  2.2  11 mi. N of Ridgecrest, CA
10/19 11:24 am  33 11.3  115 34.5  2.8  3 mi. ENE of Obsidian Butte, CA
10/19  2:18 pm  32  5.0  115 25.1  3.2  40 mi. S of Calexico, CA
10/19  5:05 pm  32  4.4  115 25.4  2.8  41 mi. S of Calexico, CA
10/19  7:48 pm  32  3.5  115 24.3  4.2  42 mi. S of Calexico, CA
10/19  7:53 pm  32  1.1  115 24.5  3.7  45 mi. S of Calexico, CA
10/19 11:21 pm  32  6.9  115 24.7  2.6  38 mi. S of Calexico, CA
10/19 11:52 pm  32  4.4  115 24.9  2.9  41 mi. S of Calexico, CA
10/20 12:56 am  32 43.6  115 24.2  2.7  6 mi. NE of Calexico, CA
10/20  1:38 am  33 32.3  116 40.1  2.1  1 mi. S of Anza, CA
10/20 11:12 am  35 47.2  117 39.3  2.2  11 mi. N of Ridgecrest, CA
10/20  3:48 pm  32  3.9  115 24.9  3.2  41 mi. S of Calexico, CA
10/20  4:14 pm  32  5.1  115 24.2  3.8  40 mi. S of Calexico, CA
10/20  4:28 pm  32  4.5  115 25.5  3.1  41 mi. S of Calexico, CA
10/20  4:43 pm  34 37.8  116 34.3  2.3  24 mi. ENE of Lucerne Valley, CA
10/20  5:49 pm  32  4.9  115 25.1  2.7  40 mi. S of Calexico, CA
10/20  9:19 pm  34 58.6  116 57.4  2.1  7 mi. NNE of Barstow, CA
10/20 10:31 pm  34 58.5  116 57.5  2.2  7 mi. NNE of Barstow, CA
10/20 11:43 pm  34 59.5  116 56.9  2.1  8 mi. NNE of Barstow, CA
10/21  1:56 am  34 56.7  116 39.4  3.1  21 mi. E of Barstow, CA
10/21  4:34 am  32  5.5  115 25.1  2.6  40 mi. S of Calexico, CA
10/21  5:28 am  32  4.4  115 25.2  2.6  41 mi. S of Calexico, CA
10/21  5:58 am  34 21.9  118 36.3  2.6  3 mi. SW of Valencia, CA
10/21  6:54 am  32  4.8  115 24.7  3.2  41 mi. S of Calexico, CA
10/21  9:35 am  35 19.9  119 19.5  2.0  14 mi. NNE of Taft, CA
10/21  5:41 pm  33 12.2  116 24.7  2.6  4 mi. SSW of Borrego Springs, CA
10/21 10:08 pm  32  4.3  115 25.5  2.6  41 mi. S of Calexico, CA
10/21 10:16 pm  32  0.2  116 18.8  2.9  53 mi. SSW of Ocotillo, CA
10/22  1:21 am  32  2.8  115 25.3  2.6  43 mi. S   of Calexico, CA