Southern California Earthquakes in the Past Week
Anthony Guarino
Seismological Laboratory
Lucy Jones U. S. Geological Survey
California Institute of Technology
April 27, 2006
This report covers the seven day period ending 17:00 on April 27, 2006. During this period we detected and analyzed 157 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
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10179613 2.2 2006/04/20 23:34:38 36 17.3 N 119 43.9 W 5.7 40 km (25 mi) W of Visalia, CA
10179621 2.4 2006/04/21 01:07:56 33 49.6 N 119 22.9 W 0.0 26 km (16 mi) SSE of Santa Cruz Is.
10179673 2.2 2006/04/21 09:31:39 33 11.6 N 115 36.2 W 3.1 4 km ( 2 mi) NE of Obsidian Butte, CA
10179713 2.1 2006/04/21 13:06:58 34 9.2 N 117 27.9 W 16.2 6 km ( 4 mi) NNW of Fontana, CA
10179889 2.2 2006/04/22 17:39:35 33 14.0 N 116 5.7 W 11.7 11 km ( 7 mi) NNE of Ocotillo Wells, CA
10179909 2.0 2006/04/22 19:21:00 35 22.4 N 118 38.1 W 5.7 26 km (16 mi) NE of Arvin, CA
10179953 2.4 2006/04/23 10:25:22 33 45.4 N 119 25.2 W 6.0 32 km (20 mi) SSE of Santa Cruz Is.
10180069 2.6 2006/04/24 10:17:36 32 14.2 N 115 16.4 W 6.0 52 km (33 mi) SSE of Calexico, CA
10180129 2.8 2006/04/25 01:55:11 32 12.9 N 115 16.3 W 6.0 55 km (34 mi) SSE of Calexico, CA
10180177 2.3 2006/04/25 10:52:46 34 15.4 N 117 33.7 W 5.4 9 km ( 5 mi) ESE of Mt. Baldy, CA
10180293 2.2 2006/04/26 10:23:29 33 41.8 N 118 12.8 W 7.1 8 km ( 5 mi) E of Pt. Fermin San Pedro, CA
10180325 2.0 2006/04/26 12:54:49 33 25.5 N 116 36.8 W 13.5 16 km (10 mi) SSE of Anza, CA
10180341 2.9 2006/04/26 13:53:31 33 50.3 N 119 23.5 W 6.0 24 km (15 mi) SSE of Santa Cruz Is.
10180433 2.1 2006/04/26 22:23:34 33 42.2 N 119 28.1 W 6.0 37 km (23 mi) S of Santa Cruz Is.
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Southern California Earthquakes in the Past Week
Anthony Guarino
Seismological Laboratory
Lucy Jones U. S. Geological Survey
California Institute of Technology
April 20, 2006
This report covers the seven day period ending 17:00 on April 20, 2006. During this period we detected and analyzed 134 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
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10178881 2.7 2006/04/14 11:28:53 34 40.9 N 116 17.5 W 3.8 61 km (38 mi) N of Joshua Tree, CA
10179177 2.1 2006/04/18 01:12:41 33 58.0 N 116 34.2 W 9.7 6 km ( 4 mi) W of Desert Hot Springs, CA
10179273 2.3 2006/04/18 17:15:30 34 39.0 N 117 44.7 W 8.9 34 km (21 mi) NNW of Wrightwood, CA
10179313 2.0 2006/04/19 01:10:42 34 6.2 N 117 19.0 W 15.5 2 km ( 1 mi) WSW of San Bernardino, CA
10179325 2.0 2006/04/19 02:31:14 34 33.7 N 118 57.6 W 15.5 19 km (12 mi) NNW of Fillmore, CA
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Southern California Earthquakes in the Past Week
Anthony Guarino
Seismological Laboratory
Lucy JonesU. S. Geological Survey
California Institute of Technology
April 13, 2006
This report covers the seven day period ending 17:00 on April 13, 2006. During this period we detected and analyzed 149 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
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14220588 2.9 2006/04/06 17:32:32 34 24.2 N 120 52.4 W 6.0 28 km (18 mi) SW of Pt. Arguello, CA
Possibly felt at Pt. Arguello, but no reports due to the offshore location
14220884 2.2 2006/04/08 21:20:09 35 26.4 N 119 21.3 W 15.6 33 km (20 mi) WNW of Bakersfield, CA
14220900 2.0 2006/04/08 23:36:14 33 38.7 N 116 44.9 W 15.7 12 km ( 7 mi) SSW of Idyllwild, CA
14220904 2.2 2006/04/08 23:47:46 32 4.7 N 116 8.4 W 6.0 74 km (46 mi) S of Ocotillo, CA
14220956 2.2 2006/04/09 07:09:24 33 3.6 N 115 33.1 W 10.0 7 km ( 4 mi) ENE of Westmorland, CA
14221100 2.5 2006/04/10 09:36:26 35 59.6 N 117 23.3 W 5.0 25 km (16 mi) N of Trona, CA
14221216 2.3 2006/04/10 21:00:40 34 5.6 N 117 25.7 W 4.2 2 km ( 1 mi) SSE of Fontana, CA
14221232 2.2 2006/04/11 00:04:30 32 28.5 N 115 34.6 W 10.0 23 km (14 mi) SSW of Calexico, CA
14221236 2.3 2006/04/11 00:23:26 33 14.5 N 115 57.3 W 5.8 4 km ( 3 mi) SSE of Salton City, CA
14221372 2.1 2006/04/11 17:59:39 34 1.3 N 117 13.8 W 17.2 4 km ( 2 mi) SE of Loma Linda, CA
14221396 2.1 2006/04/11 22:48:20 33 52.2 N 116 12.1 W 8.7 17 km (11 mi) N of Indio, CA
14221424 2.6 2006/04/12 04:44:21 33 11.2 N 115 36.6 W 2.5 3 km ( 2 mi) NE of Obsidian Butte, CA
10178769 2.6 2006/04/13 09:40:14 34 5.2 N 118 35.4 W 5.3 9 km ( 6 mi) S of Woodland Hills, CA
Felt over a wide area from the Westside, to Woodland Hills, Santa Monica, West LA, Pacific Palisades, Topanga, Winnetka, West Hills, Encino,
Tarzana, Woodland Hills, Sherman Oaks, Valley Village, and Downtown Los Angeles. If you felt this quake, and would like to report it, click here.
10178781 2.6 2006/04/13 11:44:34 32 35.6 N 115 49.3 W 12.0 22 km (14 mi) SE of Ocotillo, CA
10178785 3.5 2006/04/13 12:06:27 32 37.5 N 115 49.1 W 14.8 20 km (13 mi) SE of Ocotillo, CA
Felt in Ocotillo Wells, Calexico, El Centro, and Brawley.
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There was a M2.6 earthquake at 9:40AM this morning, located 9 miles southeast of Calabasas or 6 miles south of Woodland Hills. This quake was felt over a wide area from the Westside, to Santa Monica, West LA, Pacific Palisades, Topanga, Winnetka, West Hills, Encino, Tarzana, Woodland Hills, Sherman Oaks, Valley Village, and Downtown Los Angeles. This was felt over a wide area, but no damage would be expected with an event of this magnitude. If you felt this quake, and would like to report it, click here. Maximum Modified Mercalli Intensity IV.
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Southern California Earthquakes in the Past Week
Anthony Guarino
Seismological Laboratory
Lucy Jones U. S. Geological Survey
California Institute of Technology
April 06, 2006
This report covers the seven day period ending 17:00 on April 06, 2006. During this period we detected and analyzed 150 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
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14219744 2.5 2006/03/31 00:28:58 32 0.7 N 115 52.4 W 6.0 81 km (50 mi) SSW of Calexico, CA
14219760 2.7 2006/03/31 03:39:07 32 29.0 N 118 6.6 W 6.0 43 km (27 mi) SSE of San Clemente Is.
14219872 2.3 2006/04/01 03:52:51 32 10.4 N 115 51.8 W 6.0 64 km (40 mi) S of Ocotillo, CA
14219900 2.3 2006/04/01 05:12:29 32 7.7 N 117 18.6 W 6.0 53 km (33 mi) SSW of San Ysidro, CA
14219904 2.2 2006/04/01 05:31:52 34 30.5 N 118 5.7 W 12.9 8 km ( 5 mi) S of Palmdale, CA
14219976 3.3 2006/04/01 19:25:10 32 4.0 N 115 3.9 W 6.0 78 km (49 mi) SSE of Calexico, CA
14219988 2.3 2006/04/01 20:14:06 33 49.9 N 119 23.5 W 6.0 25 km (16 mi) SSE of Santa Cruz Is.
14220024 2.4 2006/04/02 06:07:30 34 18.9 N 119 30.6 W 10.8 9 km ( 6 mi) S of Carpinteria, CA
14220064 2.1 2006/04/02 16:30:26 32 58.8 N 117 32.3 W 16.8 28 km (17 mi) SSW of Oceanside, CA
14220076 2.2 2006/04/02 17:17:44 35 2.6 N 117 40.1 W 0.1 5 km ( 3 mi) NNW of Boron, CA
14220100 2.0 2006/04/02 22:29:04 32 20.0 N 115 1.2 W 6.0 55 km (34 mi) SW of Yuma, AZ
14220144 2.1 2006/04/03 10:19:06 34 14.1 N 116 46.5 W 3.1 8 km ( 5 mi) ESE of Big Bear City, CA
14220156 2.6 2006/04/03 11:22:43 32 8.8 N 115 3.7 W 6.0 71 km (44 mi) SE of Calexico, CA
14220192 2.2 2006/04/03 18:15:47 33 48.6 N 118 21.5 W 15.4 3 km ( 2 mi) SSE of Torrance, CA
14220244 2.5 2006/04/03 23:31:35 32 18.9 N 115 11.8 W 6.0 48 km (30 mi) SE of Calexico, CA
14220280 2.2 2006/04/04 04:40:49 32 19.3 N 115 19.0 W 16.3 42 km (26 mi) SSE of Calexico, CA
14220480 2.0 2006/04/06 02:49:06 35 16.4 N 118 33.5 W 5.8 19 km (12 mi) NNW of Tehachapi, CA
14220484 2.5 2006/04/06 03:05:59 35 16.4 N 118 33.3 W 5.8 19 km (12 mi) NNW of Tehachapi, CA
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2006 Quarterly Seismicity Report for the Southern California Seismic Network Portion of the CISN
Kate Hutton, Anthony Guarino, Joe Franck, and Nick Scheckel – California Institute of Technology, Seismological Laboratory
Southern California events processed & distributed:
During the reporting period (January 1 through March 31, 2006), we recorded & processed (K. Hutton, J. Franck, A. Guarino, N. Scheckel):
2,727 earthquakes (inside & just outside of our region) & quarry blasts, of which
- 410 were magnitude 2.0 or larger, of which
- 47 were magnitude 3.0 or larger, of which
- 1 were magnitude 4.0 or larger.
The one magnitude 4+ quake is listed below:
Mag. Local date Local time Lat. Long. Depth Descriptive location
4.0 03/28 17:36:23 35 37.3 N 117 35.3 W 8.8 7 km (4 mi) E of Ridgecrest
Although the total number of earthquakes during this past quarter is comparable, slightly higher in fact, to the previous quarter, there was only one M4+ event. This China Lake area quake achieve MMI IV in Ridgecrest & Johannesburg. It was felt as far away as Lake Isabella (537 CIIM reports, many of which confuse it with a possible sonic boom event in the San Diego area).
The earthquakes that were felt by the most people included a ML2.9 near Lakewood on Feb. 4 (1,007 CIIM reports) and a ML3.4 on March 5, 3 miles west-northwest of Glen Avon (710 CIIM reports).
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