SOUTHERN CALIFORNIA SEISMOGRAPHIC NETWORK A Cooperative Project of Caltech and the U.S. Geological Survey November 16, 1995 Weekly Earthquake Report for Southern California ------------------------------------------------ November 9 - 15, 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 Thursday morning, November 9, Universal Time (ie. GMT), to midnight Wednesday night, November 15, 1995, Universal Time. In local time, the period of coverage is from 4 p.m., November 8 to 4 p.m., November 15 Pacific Standard Time. Please note that using a GMT time block constitutes a change in procedure for the Weekly Report, beginning this month. The reason for the change is so that we don't have to work all night on Wednesdays to finish the processing. Event times will still be tabulated in local time. We detected and processed 552 earthquakes during the 7-day period covered. The weekly total is down from last week, mainly as a reflection of the slow decrease in Ridgecrest area quakes. The two largest quakes of the week, a M3.2 late last Wednesday night and a M3.1 early this Wednesday morning, were both aftershocks of the June 28, '92 Mw7.3 Landers earthquake. The M3.1 was close to Yucca Valley and was felt. There were also two M3.0 quakes this week. The first one, near Loma Linda on Saturday, was felt. The other one occurred on Sunday afternoon near Hemet. We got no calls about the Hemet quake. Looking at the map, you may notice a small cluster of five quakes in the South Bay area. The largest of these was M2.1, definitely too small to feel. 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 ------------------------------------------------------------- 11/8 4:45 pm 34 2.1 116 21.8 2.4 7 mi. SSW of Joshua Tree 11/8 6:26 pm 33 59.6 116 57.6 2.2 4 mi. NNE of Beaumont 11/8 8:13 pm 34 24.3 116 28.3 2.8 19 mi. N of Yucca Valley 11/8 8:18 pm 34 24.2 116 28.3 2.7 " 11/8 9:39 pm 34 38.2 116 20.9 2.1 34 mi. N of Joshua Tree 11/8 10:22 pm 34 24.1 116 28.4 3.2 19 mi. N of Yucca Valley 11/8 11:09 pm 35 20.7 118 34.3 2.1 16 mi. NNW of Tehachapi 11/9 12:08 am 34 16.3 116 24.3 2.0 10 mi. NNE of Yucca Valley 11/9 11:53 am 34 18.2 116 27.6 2.2 12 mi. N of Yucca Valley 11/10 12:30 am 34 18.0 116 27.1 2.1 " 11/10 2:33 am 33 49.7 117 39.7 2.2 6 mi. WSW of Corona 11/10 5:09 am 35 44.2 117 39.0 2.4 7 mi. N of Ridgecrest 11/10 8:08 am 35 47.7 117 29.9 2.0 7 mi. WNW of Trona 11/10 10:20 am 35 2.0 116 59.5 2.0 10 mi. N of Barstow 11/10 10:47 am 34 8.9 116 26.0 2.1 2 mi. NNE of Yucca Valley 11/10 12:31 pm 34 35.3 120 43.1 2.5 4 mi. WNW of Pt. Arguello 11/10 6:00 pm 34 29.7 116 27.4 2.0 26 mi. N of Yucca Valley 11/11 7:12 am 33 40.7 116 46.5 2.6 5 mi. SW of Idyllwild 11/11 9:03 am 35 44.9 117 38.2 2.1 8 mi. N of Ridgecrest 11/11 1:22 pm 34 3.0 117 15.9 3.0 Under Loma Linda; FELT 11/11 7:43 pm 33 42.4 116 46.0 2.0 4 mi. SW of Idyllwild 11/11 9:32 pm 34 0.0 118 41.6 2.0 2 mi. SSW of Malibu 11/12 12:56 am 36 3.7 117 51.5 2.0 5 mi. ENE of Coso Junction 11/12 9:46 am 35 46.0 117 39.5 2.0 9 mi. N of Ridgecrest 11/12 11:10 am 35 45.1 117 38.4 2.6 " 11/12 2:51 pm 34 17.2 118 25.9 2.3 Under San Fernando 11/12 4:54 pm 33 36.8 117 0.7 3.0 9 mi. SSW of Hemet 11/12 7:44 pm 35 49.4 117 40.1 2.1 13 mi. N of Ridgecrest 11/12 7:50 pm 35 49.5 117 40.0 2.1 14 mi. N of Ridgecrest 11/13 3:54 am 35 45.3 117 38.0 2.4 9 mi. NNE of Ridgecrest 11/13 4:29 am 32 59.1 117 44.3 2.0 25 mi. SW of Oceanside 11/13 4:38 am 35 45.3 117 39.3 2.3 9 mi. N of Ridgecrest 11/13 10:02 am 35 47.3 117 38.2 2.0 11 mi. N of Ridgecrest 11/13 10:38 am 35 43.5 117 36.9 2.2 7 mi. NNE of Ridgecrest 11/13 12:16 pm 35 6.6 116 30.6 2.1 27 mi. SE of Goldstone Lake 11/13 12:39 pm 33 5.5 116 3.8 2.0 5 mi. SE of Ocotillo Wells 11/13 6:06 pm 34 18.2 118 23.7 2.4 2 mi. NW of Lake View Terrace 11/13 10:08 pm 33 26.3 119 6.3 2.4 3 mi. SW of Santa Barbara Is. 11/13 10:10 pm 34 22.6 116 27.3 2.1 17 mi. N of Yucca Valley 11/13 11:14 pm 34 24.3 118 39.9 2.0 5 mi. W of Valencia 11/14 7:14 am 34 3.5 116 58.0 2.2 4 mi. ENE of Yucaipa 11/14 10:49 am 36 5.5 120 34.8 2.5 12 mi. WSW of Coalinga 11/14 2:32 pm 34 17.1 118 31.1 2.0 1 mi. NW of Granada Hills 11/14 4:09 pm 33 51.5 118 25.3 2.1 2 mi. SSW of Manhattan Beach 11/14 5:46 pm 34 11.8 118 33.3 2.0 1 mi. WSW of Reseda 11/15 2:15 am 36 3.5 117 51.3 2.0 5 mi. E of Coso Junction 11/15 3:07 am 35 31.3 118 21.5 2.0 9 mi. SE of town of Lake Isabella 11/15 5:15 am 35 46.4 117 39.3 2.2 10 mi. N of Ridgecrest 11/15 5:16 am 33 48.8 118 34.3 2.0 8 mi. WNW of Palos Verdes Point 11/15 5:53 am 34 5.3 116 23.8 3.1 3 mi. SE of Yucca Valley FELT 11/15 6:24 am 34 20.0 118 34.5 2.0 4 mi. S of Valencia 11/15 6:24 am 34 20.6 118 34.8 2.3 3 mi. SSW of Valencia 11/15 9:12 am 33 10.6 116 2.0 2.1 6 mi. ENE of Ocotillo Wells 11/15 12:13 pm 33 21.2 116 21.8 2.0 6 mi. N of Borrego Springs 11/15 1:15 pm 35 44.7 117 38.2 2.4 8 mi. N of Ridgecrest 11/15 1:16 pm 35 44.8 117 38.2 2.6 " 11/15 2:43 pm 35 44.8 117 36.1 2.0 9 mi. NNE of Ridgecrest 11/15 3:39 pm 33 24.2 117 2.7 2.1 10 mi. WNW of Palomar Observatory -------------------------------------------------------------