SOUTHERN CALIFORNIA SEISMOGRAPHIC NETWORK A Cooperative Project of Caltech and the U.S. Geological Survey September 26, 1996 Weekly Earthquake Report for Southern California ------------------------------------------------ September 19 - 25, 1996 Prepared by: Kate Hutton, Seismological Laboratory (kate@bombay.gps.caltech.edu) Lucy Jones, U. S. Geological Survey California Institute of Technology For further information, please contact the authors or the Caltech Public Relations Office at 818-395-6327. For daily updates, call our Earthquake Information Hotline: 818-395-6977. -------------------------------- This week's Report covers the time period from midnight Thursday morning, September 19, Universal Time (ie. GMT), to midnight Wednesday night, September 25, Universal Time. In local time, the period of coverage is from 5 p.m., September 18, Pacific Daylight Time, to 5 p.m., September 25, Pacific Daylight Time. We detected and processed 277 earthquakes during the seven-day period covered. It was a week of small earthquakes. Although the total number of events was comparable to last week, the only quake that was felt was the M2.5 early Friday morning near Seal Beach. The largest one was a M2.8 on Monday morning in the northern Mojave Desert. Table 1 lists the quakes this 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. Table 1 ------- Date Time N Lat. W Long. Mag ------------------------------------------------------------- 9/18 10:29 pm 36 6.7 117 51.4 2.5 Coso Range, 5 mi. ESE of Haiwee Reservoir 9/19 2:29 am 34 19.1 116 27.4 2.0 13 mi. N of Yucca Valley 9/19 7:02 am 33 15.6 116 3.4 2.4 5 mi. WSW of Salton City 9/19 2:49 pm 35 8.1 118 55.9 2.5 7 mi. SW of Arvin 9/19 3:14 pm 35 7.8 118 55.6 2.1 " 9/19 9:22 pm 34 17.1 117 35.0 2.3 3 mi. E of Mt. Baldy 9/19 11:01 pm 34 19.5 116 48.3 2.3 4 mi. NNE of Big Bear City 9/20 6:53 am 33 46.0 118 7.0 2.5 1 mi. NNW of Seal Beach FELT 9/20 10:08 pm 34 26.6 116 29.9 2.0 22 mi. N of Yucca Valley 9/21 1:58 am 32 30.1 115 30.2 2.3 11 mi. S of Calexico 9/21 7:05 pm 32 40.8 115 56.1 2.3 5 mi. SE of Ocotillo 9/21 11:25 pm 35 49.4 117 42.3 2.1 14 mi. N of Ridgecrest 9/22 9:57 am 36 4.9 117 50.8 2.4 Coso Range, 6 mi. ENE of Coso Junction 9/22 11:04 am 34 57.1 116 45.7 2.1 15 mi. ENE of Barstow 9/22 11:33 am 34 3.7 118 1.1 2.1 Under El Monte 9/22 6:08 pm 35 6.6 116 39.6 2.1 21 mi. SE of Goldstone Lake 9/22 7:45 pm 34 5.3 117 18.9 2.3 1 mi. SW of San Bernardino 9/23 12:41 am 32 54.3 116 16.8 2.0 18 mi. SSW of Ocotillo Wells 9/23 5:43 am 36 33.7 117 57.2 2.0 6 mi. ESE of Lone Pine 9/23 7:16 am 35 26.8 117 2.2 2.8 10 mi. NW of Goldstone Lake 9/23 7:36 am 34 1.2 116 43.2 2.4 7 mi. NNE of Cabazon 9/23 2:27 pm 32 39.7 115 56.0 2.0 6 mi. SE of Ocotillo 9/24 4:47 am 33 7.8 117 38.2 2.1 15 mi. WSW of Oceanside 9/24 4:57 am 33 7.9 117 37.9 2.1 " 9/24 2:53 pm 34 30.4 116 32.0 2.2 27 mi. N of Yucca Valley 9/24 3:55 pm 34 55.5 116 55.5 2.1 6 mi. ENE of Barstow 9/25 2:58 pm 35 31.9 119 8.7 2.0 13 mi. NW of Bakersfield -------------------------------------------------------------