Southern California Earthquakes in the Past Week
Seismological Laboratory
Lucy Jones, U. S. Geological Survey
California Institute of Technology
April 30, 2009
This report covers the seven day period ending 17:00 on April 30, 2009. During this period we detected and analyzed 310 earthquakes.
The table below lists the quakes during the past 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.
Mag. PST Date PST Time Lat. Long. Depth Descriptive location -------------------------------------------------------------------------------------------
10399881 2.3 2009/04/23 20:02:51 34 19.5 N 116 43.6 W 12.5 13 km ( 8 mi) ENE of Big Bear City, CA 10399889 4.0 2009/04/23 20:27:50 33 53.6 N 117 47.4 W 4.2 2 km ( 1 mi) ENE of Yorba Linda, CA Felt 10399897 2.6 2009/04/23 20:28:45 33 53.7 N 117 46.9 W 4.1 3 km ( 2 mi) ENE of Yorba Linda, CA 10399905 2.5 2009/04/23 21:04:51 33 53.7 N 117 47.1 W 4.5 2 km ( 2 mi) ENE of Yorba Linda, CA 10399937 2.6 2009/04/23 23:41:23 32 10.0 N 115 47.1 W 0.1 62 km (39 mi) SSW of Calexico, CA 10399985 2.7 2009/04/24 02:12:00 32 8.9 N 115 45.5 W 6.0 63 km (39 mi) SSW of Calexico, CA 10400073 2.9 2009/04/24 07:12:19 32 5.4 N 115 41.6 W 6.0 67 km (42 mi) SSW of Calexico, CA 10400113 2.1 2009/04/24 08:42:46 33 24.4 N 118 1.3 W 5.7 25 km (15 mi) SSW of Newport Beach, CA 10400193 2.1 2009/04/24 15:34:48 32 9.6 N 115 44.9 W 6.0 61 km (38 mi) SSW of Calexico, CA 10400233 3.0 2009/04/24 17:06:05 33 53.7 N 117 47.1 W 4.0 2 km ( 2 mi) ENE of Yorba Linda, CA 10400321 2.3 2009/04/24 18:11:20 33 9.0 N 116 29.9 W 5.5 12 km ( 8 mi) NE of Julian, CA 10400433 2.3 2009/04/25 05:08:59 32 10.5 N 115 43.1 W 6.0 59 km (36 mi) SSW of Calexico, CA 13869759 2.2 2009/04/25 05:11:16 32 10.3 N 115 43.2 W 6.0 59 km (37 mi) SSW of Calexico, CA 10400457 2.6 2009/04/25 05:38:53 34 1.8 N 117 35.6 W 15.9 6 km ( 4 mi) SE of Ontario, CA 10400601 2.3 2009/04/25 12:20:15 32 11.1 N 115 50.6 W 6.0 63 km (39 mi) SSE of Ocotillo, CA 10400633 2.2 2009/04/25 14:53:06 33 25.0 N 117 1.6 W 5.6 17 km (10 mi) WNW of Palomar Observatory, CA 10400745 2.5 2009/04/25 21:32:39 34 10.8 N 119 42.5 W 6.0 24 km (15 mi) ENE of Santa Cruz Is. 10400793 3.1 2009/04/25 22:10:27 34 29.4 N 116 14.3 W 5.5 40 km (25 mi) N of Joshua Tree, CA 10400873 2.0 2009/04/26 03:41:59 34 34.8 N 116 16.2 W 4.5 49 km (31 mi) N of Joshua Tree, CA 10400889 2.0 2009/04/26 04:11:29 34 59.3 N 116 50.5 W 3.7 20 km (12 mi) NE of Barstow, CA 10400977 2.2 2009/04/26 11:47:22 33 23.5 N 116 26.5 W 14.0 16 km (10 mi) NNW of Borrego Springs, CA 10401033 3.2 2009/04/26 13:19:29 32 4.4 N 115 47.6 W 6.0 72 km (45 mi) SSW of Calexico, CA 10401201 2.7 2009/04/26 19:28:07 33 58.7 N 117 44.7 W 12.2 6 km ( 4 mi) ESE of Diamond Bar, CA 10401225 2.2 2009/04/26 20:43:32 33 16.4 N 116 47.2 W 10.6 5 km ( 3 mi) NNW of Lake Henshaw, CA 10401329 2.4 2009/04/27 09:18:04 32 12.4 N 115 4.4 W 6.0 65 km (40 mi) SE of Calexico, CA 10401481 2.6 2009/04/27 16:36:48 32 6.8 N 115 20.6 W 6.0 63 km (39 mi) SSE of Calexico, CA 10401585 2.3 2009/04/27 21:25:17 35 24.3 N 119 32.9 W 33.5 30 km (19 mi) NNW of Taft, CA 10401777 2.8 2009/04/28 09:12:00 32 30.0 N 115 34.4 W 6.0 20 km (12 mi) SSW of Calexico, CA 10402025 2.0 2009/04/28 16:52:53 33 2.8 N 116 25.8 W 5.5 16 km (10 mi) ESE of Julian, CA 10402065 2.2 2009/04/28 17:58:40 33 33.4 N 118 10.9 W 13.6 20 km (12 mi) SSE of Pt. Fermin San Pedro, CA 10402193 2.8 2009/04/28 20:08:44 36 24.4 N 117 50.5 W 5.7 20 km (13 mi) NE of Olancha, CA 10402353 2.0 2009/04/29 05:29:50 33 49.6 N 115 33.7 W 3.4 8 km ( 5 mi) WSW of Eagle Mtn., CA 10402385 2.8 2009/04/29 06:03:34 32 7.8 N 115 46.1 W 6.0 65 km (40 mi) SSW of Calexico, CA 10402593 2.8 2009/04/29 14:22:20 35 18.8 N 118 33.9 W 1.9 23 km (14 mi) NNW of Tehachapi, CA 10402689 2.5 2009/04/29 19:27:11 32 8.7 N 115 44.6 W 6.0 63 km (39 mi) SSW of Calexico, CA 10402809 2.3 2009/04/30 03:29:41 32 24.6 N 115 4.8 W 6.0 48 km (30 mi) SE of Calexico, CA 10402825 2.0 2009/04/30 04:27:59 32 21.9 N 115 2.5 W 6.0 54 km (33 mi) SW of Yuma, AZ 10402881 2.4 2009/04/30 06:01:35 32 7.7 N 115 45.3 W 6.0 65 km (40 mi) SSW of Calexico, CA