SOUTHERN CALIFORNIA SEISMOGRAPHIC NETWORK A Cooperative Project of Caltech and the U.S. Geological Survey November 30, 1995 Weekly Earthquake Report for Southern California ------------------------------------------------ November 22 - 29, 1995 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 818-395-6326. For daily updates, call our Earthquake Information Hotline: 818-395-6977. -------------------------------- This week's Report covers the time period from midnight Wednesday morning, November 22, Universal Time (ie. GMT), to midnight Wednesday night, November 29, 1995, Universal Time. In local time, the period of coverage is from 4 p.m., November 21 to 4 p.m., November 29 Pacific Standard Time. The Weekly Report was issued one day early last week because of the Thanksgiving holiday. We detected and processed 575 earthquakes during the 8-day period covered. As expected, most of the week's activity happened at Ridgecrest, Northridge, and Landers. The largest event of the week, however, and the only one above M3, was not a member of any of those on-going sequences. It occurred on Monday evening, in the northern Mojave Desert, and had a magnitude of M3.4. One quake was felt this week. It occurred just after noon on Thanksgiving day, in the Santa Ana Mountains between Corona and Orange County. The magnitude was only M2.7, but we did get at least one inquiry about it. The table 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 ------------------------------------------------------------- 11/22 3:53 am 34 13.9 117 27.3 2.5 3 mi. WNW of Devore 11/22 9:04 am 36 33.9 118 8.9 2.8 5 mi. WSW of Lone Pine 11/22 11:44 am 34 22.9 116 28.0 2.0 18 mi. N of Yucca Valley 11/22 12:49 pm 35 44.5 117 38.2 2.3 8 mi. NNE of Ridgecrest 11/22 8:45 pm 34 18.6 118 28.6 2.1 3 mi. NNE of Granada Hills 11/22 9:34 pm 35 47.8 117 38.1 2.7 12 mi. N of Ridgecrest 11/22 10:48 pm 35 45.8 117 38.8 2.3 9 mi. N of Ridgecrest 11/22 11:06 pm 34 58.8 116 58.5 2.2 6 mi. NNE of Barstow 11/23 6:42 am 35 44.5 117 38.1 2.3 8 mi. NNE of Ridgecrest 11/23 9:58 am 36 14.2 120 15.8 2.5 8 mi. NE of Coalinga 11/23 12:11 pm 33 49.5 117 39.7 2.7 6 mi. WSW of Corona FELT 11/23 4:31 pm 35 47.7 117 37.9 2.1 12 mi. N of Ridgecrest 11/24 12:41 am 34 48.9 116 23.8 2.2 36 mi. SSW of Baker 11/24 4:00 am 33 1.7 117 49.5 2.0 30 mi. SSW of Dana Point 11/24 4:14 am 34 11.1 116 26.2 2.4 4 mi. N of Yucca Valley 11/24 8:20 am 35 46.8 117 39.1 2.0 10 mi. N of Ridgecrest 11/24 8:22 am 35 46.7 117 39.0 2.0 " 11/24 10:46 pm 33 53.6 116 32.9 2.3 5 mi. N of Palm Springs 11/25 2:46 am 34 16.3 118 31.1 2.0 Under Granada Hills 11/25 6:48 pm 33 15.8 116 4.8 2.9 6 mi. W of Salton City 11/25 6:58 pm 33 15.8 116 4.8 2.7 " 11/26 3:42 am 33 15.8 116 4.8 2.5 " 11/26 3:52 am 33 15.8 116 4.7 2.0 " 11/26 6:58 am 33 40.6 116 47.9 2.1 6 mi. SW of Idyllwild 11/26 8:02 am 36 5.2 117 37.9 2.3 19 mi. SSW of Panamint Springs 11/26 12:45 pm 36 5.3 117 38.1 2.2 " 11/26 4:13 pm 34 46.0 116 17.5 2.0 36 mi. SSW of Baker 11/26 10:30 pm 35 47.1 117 38.9 2.3 11 mi. N of Ridgecrest 11/26 11:27 pm 33 3.3 117 51.7 2.2 29 mi. SSW of Dana Point 11/27 2:40 am 35 45.1 117 38.2 2.2 9 mi. N of Ridgecrest 11/27 5:57 am 34 56.8 116 47.8 2.4 13 mi. ENE of Barstow 11/27 6:30 am 34 27.7 116 31.7 2.5 24 mi. NNW of Yucca Valley 11/27 9:48 am 32 16.5 115 12.3 2.7 32 mi. SSE of Calexico 11/27 2:46 pm 35 45.0 117 38.5 2.6 9 mi. N of Ridgecrest 11/27 3:34 pm 34 57.2 116 47.3 2.0 14 mi. ENE of Barstow 11/27 6:23 pm 35 25.8 117 15.8 3.4 24 mi. SSE of Trona 11/28 7:02 am 33 47.1 116 8.4 2.0 6 mi. NE of Indio 11/28 7:07 am 35 47.2 117 37.8 2.1 11 mi. N of Ridgecrest 11/28 2:52 pm 35 45.0 117 38.3 2.1 8 mi. N of Ridgecrest 11/29 11:37 am 34 11.3 116 48.8 2.2 5 mi. SSE of Big Bear City 11/29 12:57 pm 35 43.6 117 37.2 2.4 7 mi. NNE of Ridgecrest 11/29 12:58 pm 35 43.7 117 37.0 2.1 " 11/29 2:25 pm 35 43.6 117 37.3 2.0 " -------------------------------------------------------------