SOUTHERN CALIFORNIA SEISMOGRAPHIC NETWORK A Cooperative Project of Caltech and the U.S. Geological Survey May 25, 1995 Weekly Earthquake Report for Southern California ------------------------------------------------ May 18 - 24, 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, May 18, Pacific Daylight Time, to midnight Wednesday night, May 24, 1995, Pacific Daylight Time. We recorded 242 earthquakes of M1.0 or larger during the 7-day period covered. Two Northridge aftershocks were felt on Sunday: a M3.2 at 11:59 am and a M3.1 at 1:44 pm. They both occurred at the same location near Magic Mtn. and were felt in Simi Valley and northern San Fernando Valley. Meanwhile, a M3.0 occurred at 12:50 pm (same day) near the town of Hemet, in the complex San Jacinto Fault zone. It was probably felt, but we got no calls. There was one more M3.2 this week, early last Thursday morning. However, it occurred offshore, south of San Clemente Island, and attracted no attention at all. 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 ------------------------------------------------------------- 5/18 12:27 am 35 19.4 119 3.4 2.2 5 mi. SSW of downtown Bakersfield 5/18 3:08 am 34 6.1 116 59.9 2.5 9 mi. SE of Running Springs 5/18 3:52 am 32 23.5 118 32.3 3.2 31 mi. SSW of San Clemente Is. 5/18 8:24 am 33 54.5 116 17.4 2.0 13 mi. NNW of Indio 5/18 10:50 pm 34 20.1 116 27.2 2.1 15 mi. N of Yucca Valley 5/19 5:20 am 34 19.7 118 44.4 2.3 3 mi. NNW of Simi Valley 5/19 10:21 am 34 13.9 118 27.6 2.1 3 mi. SSW of San Fernando 5/19 5:48 pm 33 25.4 118 10.5 2.8 10 mi. ENE of Avalon, Catalina Island 5/20 7:51 am 32 53.1 116 14.9 2.3 19 mi. SSW of Ocotillo Wells 5/20 4:37 pm 33 40.0 118 17.2 2.0 2 mi. S of Pt. Fermin, San Pedro 5/20 5:43 pm 34 17.0 116 46.0 2.2 5 mi. ENE of Big Bear City 5/20 8:39 pm 34 56.3 116 55.9 2.3 6 mi. ENE of Barstow 5/21 5:54 am 34 12.5 116 51.9 2.4 3 mi. SE of town of Big Bear Lake 5/21 11:59 am 34 23.3 118 39.1 3.2 4 mi. SW of Magic Mtn. FELT 5/21 12:25 pm 34 23.4 118 39.6 2.0 " 5/21 12:50 pm 33 48.6 116 59.3 3.0 4 mi. NNW of Hemet 5/21 1:44 pm 34 23.4 118 39.2 3.1 4 mi. SW of Magic Mtn. FELT 5/21 7:03 pm 34 0.1 117 11.6 2.1 3 mi. SSW of Redlands 5/22 12:17 am 34 23.4 118 39.2 2.5 4 mi. SW of Magic Mtn. 5/23 5:33 am 34 22.2 118 39.2 2.3 " 5/23 7:24 am 35 13.9 118 34.8 2.1 10 mi. NW of Tehachapi 5/23 1:36 pm 34 6.0 116 59.8 2.0 9 mi. SE of Running Springs 5/24 2:29 am 34 23.9 118 39.0 2.1 3 mi. SW of Magic Mtn. 5/24 11:35 am 34 8.7 116 26.1 2.5 1 mi. NNE of Yucca Valley 5/24 3:51 pm 33 54.5 116 18.0 2.0 13 mi. NNE of Palm Desert 5/24 5:37 pm 35 2.2 116 59.7 2.6 10 mi. N of Barstow 5/24 8:51 pm 34 50.3 119 0.4 2.0 3 mi. WNW of Frazier Park -------------------------------------------------------------