Southern California Earthquakes in the Past Week

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

October 30, 1998


The time period covered is 5 pm on Thursday, October 15 (PDT) through 4 pm on Thursday, October 29 (PST). During this period, we detected and analysed 280 earthquakes, 93 of which belonged to the Whiskey Springs sequence (mainshock M4.9 on October 26). 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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PDT:
10/22  8:04 pm  33 39.0  116 44.5  2.0  6 mi. SSW of Idyllwild, CA
10/23  1:44 am  33  9.3  115 38.7  2.8  1 mi. SSW of Obsidian Butte, CA
10/23  3:22 am  33 30.3  116 31.0  2.2  9 mi. ESE of Anza, CA
10/23  4:25 am  35 38.4  119 47.6  2.4  23 mi. NNE of Simmler, CA
10/23  8:56 am  32  3.4  115 24.7  2.5  42 mi. S of Calexico, CA
10/23  7:26 pm  33 13.4  116 46.7  2.4  1 mi. SW of Lake Henshaw, CA
10/23  7:54 pm  32 53.5  115 40.1  2.3  9 mi. WSW of Brawley, CA
10/24  8:49 am  34 19.3  116 50.7  2.1  3 mi. N of Big Bear City, CA
10/24 10:09 am  34  9.7  116 26.3  2.0  3 mi. N of Yucca Valley, CA
10/24 11:41 am  34 19.1  116 50.9  2.1  3 mi. N of Big Bear City, CA
10/24  8:05 pm  34 59.2  116 57.7  2.2  7 mi. NNE of Barstow, CA
10/25  2:13 am  32  2.6  115 26.5  2.6  43 mi. S of Calexico, CA
10/25  2:16 am  32  1.9  115 25.1  2.6  44 mi. S of Calexico, CA
PST:
10/25  3:40 am  33 57.9  117 10.6  3.0  6 mi. S of Redlands, CA
                                        FELT in Riverside, Moreno Valley
10/25  3:54 am  32  3.6  115 25.6  3.0  42 mi. S of Calexico, CA
10/25  5:39 am  34 35.8  116 37.6  2.0  20 mi. ENE of Lucerne Valley, CA
10/25  9:20 am  32 31.8  115 17.6  2.2  15 mi. SE of Calexico, CA
10/25 12:56 pm  32  3.4  115 27.5  2.6  42 mi. S of Calexico, CA
10/25  1:48 pm  34  9.6  116 27.0  2.2  2 mi. N of Yucca Valley, CA
10/26  5:08 pm  34 19.4  116 50.6  4.9  4 mi. N of Big Bear City, CA
					FELT from Duarte, Orange Co., Hesperia
10/26  5:20 pm  34 19.0  116 50.7  2.3  3 mi. N of Big Bear City, CA
10/26  5:42 pm  34 19.1  116 50.7  3.1  3 mi. N of Big Bear City, CA
10/26  6:02 pm  34 19.5  116 51.1  2.1  4 mi. N of Big Bear City, CA
10/26  6:18 pm  34 19.5  116 50.7  2.3  4 mi. N of Big Bear City, CA
10/26  6:38 pm  34 19.1  116 51.0  2.0  3 mi. N of Big Bear City, CA
10/26  6:47 pm  34 19.3  116 50.7  2.0  3 mi. N of Big Bear City, CA
10/26  7:10 pm  34 19.5  116 50.6  2.4  4 mi. N of Big Bear City, CA
10/26  7:34 pm  34 19.3  116 50.6  2.2  3 mi. N of Big Bear City, CA
10/26  8:26 pm  34 19.2  116 50.7  2.6  3 mi. N of Big Bear City, CA
10/26  8:30 pm  34 19.3  116 50.7  2.2  3 mi. N of Big Bear City, CA
10/26  8:48 pm  34 19.4  116 50.9  2.0  4 mi. N of Big Bear City, CA
10/26  8:54 pm  34 19.5  116 50.8  2.3  4 mi. N of Big Bear City, CA
10/26  9:48 pm  34 19.4  116 50.7  2.2  4 mi. N of Big Bear City, CA
10/26 11:16 pm  34 19.4  116 51.0  3.6  4 mi. N of Big Bear City, CA
10/27 12:33 am  32  3.9  115 25.5  2.5  41 mi. S of Calexico, CA
10/27  1:48 am  34 19.8  116 51.3  2.0  4 mi. N of Big Bear City, CA
10/27  1:59 am  34 19.6  116 51.0  2.0  4 mi. N of Big Bear City, CA
10/27  2:22 am  34 19.5  116 51.3  2.8  4 mi. N of Big Bear City, CA
10/27  3:22 am  34 19.5  116 50.9  2.0  4 mi. N of Big Bear City, CA
10/27  5:09 am  34 19.7  116 51.2  2.3  4 mi. N of Big Bear City, CA
10/27  5:33 am  34 20.0  116 28.2  2.1  14 mi. N of Yucca Valley, CA 
10/27  5:35 am  34 20.1  116 27.9  2.1  14 mi. N of Yucca Valley, CA 
10/27  5:38 am  34 19.2  116 50.4  2.3  3 mi. N of Big Bear City, CA
10/27  7:26 am  34 19.3  116 50.2  2.0  4 mi. NNE of Big Bear City, CA
10/27  7:40 am  34 19.2  116 51.0  4.1  3 mi. N of Big Bear City, CA
                                        FELT
10/27  8:18 am  34 18.8  116 50.0  2.5  3 mi. NNE of Big Bear City, CA
10/27  8:37 am  34 19.2  116 50.9  2.3  3 mi. N of Big Bear City, CA
10/27  9:13 am  34 19.1  116 50.5  2.1  3 mi. N of Big Bear City, CA
10/27 10:21 am  32 55.0  115 35.2  2.1  4 mi. SW of Brawley, CA      
10/27 10:30 am  34 19.0  116 50.4  2.0  3 mi. NNE of Big Bear City, CA
10/27 11:43 am  34 19.3  116 50.7  2.1  3 mi. N of Big Bear City, CA
10/27 11:46 am  34 19.5  116 50.7  2.1  4 mi. N of Big Bear City, CA
10/27 11:57 am  34 19.5  116 51.0  2.5  4 mi. N of Big Bear City, CA
10/27  3:35 pm  34 29.3  118 45.1  2.1  7 mi. WSW of Castaic Lake dam, CA
10/27  7:24 pm  34 54.8  118 17.8  2.3  11 mi. SW of Mojave, CA       
10/27  8:08 pm  32 40.2  115 52.3  2.2  8 mi. ESE of Ocotillo, CA     
10/27  8:12 pm  34 19.6  116 51.0  2.2  4 mi. N of Big Bear City, CA
10/27  9:11 pm  34 19.4  116 50.7  2.3  4 mi. N of Big Bear City, CA
10/28  2:47 am  34 19.6  116 50.9  2.4  4 mi. N of Big Bear City, CA
10/28  3:03 am  34 19.6  116 50.8  2.2  4 mi. N of Big Bear City, CA
10/28 12:33 pm  34 18.8  116 50.0  2.0  3 mi. NNE of Big Bear City, CA
10/28  4:06 pm  34 19.0  116 50.7  3.0  3 mi. N of Big Bear City, CA
10/28  4:59 pm  34 19.2  116 50.8  2.0  3 mi. N of Big Bear City, CA
10/28  8:18 pm  34 18.8  116 50.3  2.3  3 mi. NNE of Big Bear City, CA
10/28  8:53 pm  34 18.9  116 50.5  2.0  3 mi. NNE of Big Bear City, CA
10/28 10:26 pm  34 19.7  116 51.2  2.0  4 mi. N of Big Bear City, CA
10/28 11:49 pm  34 19.3  116 50.9  2.1  3 mi. N of Big Bear City, CA
10/29 12:26 am  36  4.8  117 39.0  2.2  16 mi. E of Coso Junction, CA
10/29 12:48 am  34 19.8  116 51.2  2.0  4 mi. N of Big Bear City, CA
10/29  1:01 am  34 19.6  116 51.3  2.3  4 mi. N of Big Bear City, CA
10/29  4:52 am  34 19.0  116 50.4  2.4  3 mi. NNE of Big Bear City, CA
10/29  6:50 am  34 22.2  116 27.7  2.0  17 mi. N of Yucca Valley, CA 
10/29 10:34 am  34 32.2  118 39.9  2.0  2 mi. WNW of Castaic Lake dam, CA
10/29 12:49 pm  34 19.1  116 51.0  3.3  3 mi. N of Big Bear City, CA
10/29 12:55 pm  34 18.9  116 50.9  2.6  3 mi. N of Big Bear City, CA
10/29  1:02 pm  34 19.0  116 51.2  2.0  3 mi. N of Big Bear City, CA