SCSN Earthquake Commentary

April 28, 2007

two felt earthquakes

Filed under: Felt Earthquakes — kate @ 9:17 am

Two felt earthquakes have happened so far this weekend.

At 1:04 am today, a M3.3 event occurred in the Inland Empire, 1 mile southwest of San Bernardino. It was fairly widely felt in San Bernardino & surrounding towns. There was a M2.3 aftershock at 1:28 am.

At 7:55 am today, a M3.5 occurred 5 miles east of Julian. This quake was reported felt in Ramona, Alpine & surrounding towns, as far away as Escondido, El Cajon & Borrego Springs.

April 26, 2007

Weekly Report – April 26, 2007

Filed under: Weekly — Anthony Guarino @ 4:55 pm




Southern California Earthquakes in the Past Week

Anthony Guarino
Seismological Laboratory


Sue HoughU. S. Geological Survey

California Institute of Technology

April 26, 2007

This report covers the seven day period ending 17:00 on April 26, 2007. During this period we detected and analyzed 281 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
-------------------------------------------------------------------------------------------

14286204  2.1  2007/04/19 23:18:33 32 41.6 N 116  3.7 W  9.7    8 km ( 5 mi) SW   of Ocotillo, CA
14286244  2.9  2007/04/20 04:28:06 34  1.9 N 117 10.4 W 13.5    3 km ( 2 mi) S    of Redlands, CA
Felt in Redlands, San Bernardino, Riverside, and surround area
14286340  2.0  2007/04/20 15:11:41 32 42.4 N 116  2.2 W  9.1    5 km ( 3 mi) SW   of Ocotillo, CA
14286412  2.2  2007/04/21 02:07:12 32 41.4 N 116  3.5 W  9.1    8 km ( 5 mi) SW   of Ocotillo, CA
14286416  3.0  2007/04/21 03:04:19 32 40.9 N 116  3.3 W 10.5    8 km ( 5 mi) SW   of Ocotillo, CA
Felt in Ocotillo
14286516  2.3  2007/04/21 17:50:56 32 41.3 N 116  3.4 W  8.9    8 km ( 5 mi) SW   of Ocotillo, CA
14286548  2.7  2007/04/21 18:47:55 34 16.8 N 118 27.7 W 12.5    2 km ( 1 mi) WSW  of Pacoima, CA
Felt in Pacoima and surrounding area
14286560  2.1  2007/04/21 19:31:19 32 41.5 N 116  3.3 W  8.2    8 km ( 5 mi) SW   of Ocotillo, CA
14286672  2.0  2007/04/22 09:30:41 32 57.8 N 116  6.5 W  4.3   20 km (13 mi) S    of Ocotillo Wells, CA
14286688  2.2  2007/04/22 10:27:25 32 11.9 N 115 53.5 W  6.0   60 km (38 mi) S    of Ocotillo, CA
14286760  2.1  2007/04/22 16:41:19 32 13.6 N 115 51.1 W  7.0   58 km (36 mi) SSE  of Ocotillo, CA
14286808  3.1  2007/04/22 21:08:57 34 12.9 N 119 55.7 W  6.0   16 km (10 mi) N    of Santa Cruz Is.
14286812  2.1  2007/04/22 22:09:26 33 35.0 N 116 49.3 W 14.2   14 km ( 9 mi) WNW  of Anza, CA
14286832  2.9  2007/04/23 00:28:30 33 10.0 N 116  3.0 W  4.0    8 km ( 5 mi) ENE  of Ocotillo Wells, CA
Felt in Ocotillo Wells
14286908  2.0  2007/04/23 09:01:47 32 18.9 N 116 21.1 W 14.1   58 km (36 mi) SW   of Ocotillo, CA
14286928  3.1  2007/04/23 12:30:49 34 17.3 N 118 28.5 W 12.9    3 km ( 2 mi) NE   of Granada Hills, CA
14286960  2.7  2007/04/23 15:41:11 34  1.8 N 116 45.8 W  4.6   10 km ( 6 mi) SE   of Mt. San Gorgonio, CA
14287008  2.1  2007/04/24 02:11:51 34 33.9 N 116 31.9 W  1.0   40 km (25 mi) ENE  of Lucerne Valley, CA
14287036  3.2  2007/04/24 06:30:06 32 22.0 N 115  5.9 W  6.0   50 km (31 mi) SE   of Calexico, CA
14287232  2.3  2007/04/24 23:22:35 32 43.3 N 115 54.7 W 11.8    8 km ( 5 mi) E    of Ocotillo, CA
14287240  2.0  2007/04/25 00:30:49 32 43.1 N 116  4.2 W  7.0    7 km ( 5 mi) WSW  of Ocotillo, CA
14287268  2.6  2007/04/25 02:15:57 32 46.5 N 115 26.7 W 15.6   10 km ( 6 mi) ESE  of El Centro, CA
14287304  2.4  2007/04/25 06:28:59 32 37.3 N 117 26.9 W  7.0   25 km (16 mi) SW   of Mission Beach, CA
14287308  3.0  2007/04/25 06:56:51 36  8.2 N 117 55.1 W  2.7   10 km ( 6 mi) NNE  of Coso Junction, CA
Felt in Coso Junction
14287316  2.1  2007/04/25 07:04:17 32 46.9 N 115 27.1 W 16.2    9 km ( 6 mi) E    of El Centro, CA
14287328  2.4  2007/04/25 07:09:30 32 45.5 N 115 25.5 W 16.9   12 km ( 7 mi) NNE  of Calexico, CA
14287372  2.2  2007/04/25 09:10:56 32 47.7 N 115 26.6 W 16.5   10 km ( 6 mi) E    of El Centro, CA
14287376  3.1  2007/04/25 09:20:47 32 46.1 N 115 26.4 W 15.9   11 km ( 7 mi) ESE  of El Centro, CA
Felt in El Centro and surrounding area
14287440  2.0  2007/04/25 17:56:10 33 41.4 N 119 12.8 W  9.4   28 km (17 mi) NNW  of Santa Barbara Is., CA
14287472  2.1  2007/04/26 02:29:24 36  2.5 N 117 49.6 W  0.2   11 km ( 7 mi) E    of Coso Junction, CA
14287484  3.3  2007/04/26 04:46:57 32 10.8 N 115 53.1 W  7.4   63 km (39 mi) S    of Ocotillo, CA
14287556  2.3  2007/04/26 15:32:58 32 41.6 N 116  3.3 W  9.4    7 km ( 5 mi) SW   of Ocotillo, CA
14287568  3.0  2007/04/26 16:29:02 34 43.0 N 116 17.9 W  5.3   64 km (40 mi) SSW  of Baker, CA
Felt in Ludlow and Baker

%

April 23, 2007

M3.1 San Fernando Valley Earthquake

Filed under: Felt Earthquakes, Significant Events — Anthony Guarino @ 11:55 am

At 12:30pm this afternoon, there was a M3.1 earthquake located in the San Fernando Valley, near the Van Norman Lake area. This quake was felt throughout the San Fernando Valley. It was preceded by one very small foreshock (less than M1.0) less than one minute before the main shock. There were also two small aftershocks, at 12:31pm and 12:32pm. The first aftershock was less than M1.0, the second was a M1.8 (only events larger than M1.7 will appear on the Simpson Map). If you felt this quake, and would like to report it, click here.

another small earthquake

Filed under: Felt Earthquakes — kate @ 11:51 am

Another small earthquake (ML3.1) has occurred in the northern San Fernando Valley, at 12:30 pm today. Its location, 2 miles northeast of Granada Hills, is close to the location of the earlier cluster of events, which included a ML2.7 on Saturday. Today’s quake was felt in the northern part of the San Fernando Valley.

earthquakes this weekend

Filed under: Felt Earthquakes, Uncategorized — kate @ 8:09 am

At 6:47 pm on Saturday, a M2.7 quake was fairly widely felt in the northern San Fernado Valley. the epicenter was located 2 miles west of San Fernando.

Then, at 9:08 pm Sunday, there was a M3.1 earthquake under the Santa Barbara Channel, 19 miles southwest of Santa Barbara. It was reported felt by a few people in Santa Barbar & Goleta.

Following that, at 12:28 am Monday, there was a M2.9 located 5 miles east-northeast of Ocotillo Wells.

April 19, 2007

Filed under: Weekly — Anthony Guarino @ 4:28 pm




Southern California Earthquakes in the Past Week

Anthony Guarino
Seismological Laboratory


Sue Hough U. S. Geological Survey

California Institute of Technology

April 19, 2007

This report covers the seven day period ending 17:00 on April 19, 2007. During this period we detected and analyzed 241 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
-------------------------------------------------------------------------------------------

14284888  2.0  2007/04/13 01:51:28 32 34.1 N 115 19.0 W 35.1   20 km (12 mi) ESE  of Calexico, CA
14284948  2.0  2007/04/13 16:50:05 33 19.3 N 116 20.8 W 11.8    8 km ( 5 mi) NNE  of Borrego Springs, CA
14285004  2.4  2007/04/14 05:46:10 33 41.6 N 116 44.9 W 17.8    7 km ( 4 mi) SSW  of Idyllwild, CA
14285024  2.0  2007/04/14 10:49:36 33 10.0 N 116  2.8 W  5.4    8 km ( 5 mi) ENE  of Ocotillo Wells, CA
14285040  2.0  2007/04/14 13:26:51 34  2.4 N 117 15.6 W 19.2    1 km ( 1 mi) SSW  of Loma Linda, CA
14285088  2.7  2007/04/15 01:11:58 32 11.4 N 115 53.1 W  6.0   61 km (38 mi) S    of Ocotillo, CA
14285164  2.3  2007/04/15 15:26:55 36  7.9 N 117 55.2 W  2.0   10 km ( 6 mi) NNE  of Coso Junction, CA
14285168  4.3  2007/04/15 15:57:26 32 41.5 N 116  3.4 W  8.0    8 km ( 5 mi) SW   of Ocotillo, CA
Felt widely throughout the San Diego area. To view the ShakeMap for this event, click here. If you felt
this quake, and would like to report it, click here.
12286395  2.5  2007/04/15 15:58:41 32 41.8 N 116  1.7 W  6.0    5 km ( 3 mi) SW   of Ocotillo, CA
14285176  2.0  2007/04/15 16:13:13 32 41.3 N 116  3.0 W  8.9    7 km ( 5 mi) SW   of Ocotillo, CA
14285232  2.1  2007/04/15 18:35:57 33 57.3 N 117 45.0 W 14.5    8 km ( 5 mi) SE   of Diamond Bar, CA
14285256  2.6  2007/04/15 20:45:24 32 41.6 N 116  3.3 W 12.4    7 km ( 5 mi) SW   of Ocotillo, CA
Felt in Ocotillo Wells and surrounding area
14285300  2.8  2007/04/16 03:26:05 32  2.4 N 115 43.0 W  5.6   73 km (45 mi) SSW  of Calexico, CA
14285388  2.1  2007/04/16 16:27:39 35 55.5 N 117 56.9 W  4.5   13 km ( 8 mi) S    of Coso Junction, CA
14285452  2.2  2007/04/16 21:45:11 33 17.9 N 116 14.4 W 12.3   13 km ( 8 mi) ENE  of Borrego Springs, CA
14285456  2.3  2007/04/16 22:10:56 35 50.0 N 117 48.0 W  4.0   26 km (16 mi) NNW  of Ridgecrest, CA
14285460  2.3  2007/04/16 22:25:04 32 41.9 N 116  3.1 W  2.8    7 km ( 4 mi) SW   of Ocotillo, CA
14285500  2.3  2007/04/17 01:31:54 33  0.6 N 116 15.8 W  7.1   19 km (12 mi) SW   of Ocotillo Wells, CA
14285536  2.1  2007/04/17 06:01:02 32 41.2 N 116  3.3 W  9.0    8 km ( 5 mi) SW   of Ocotillo, CA
14285604  2.9  2007/04/17 15:31:23 34  9.7 N 117 25.4 W 11.4    6 km ( 4 mi) N    of Fontana, CA
Felt in the Inland Empire, Orange County, and San Bernardino
14285608  2.0  2007/04/17 16:03:42 32 27.5 N 115 14.7 W  9.1   33 km (21 mi) SE   of Calexico, CA
14285656  2.4  2007/04/17 19:40:57 32 41.5 N 116  3.0 W  8.0    7 km ( 4 mi) SW   of Ocotillo, CA
14285664  3.0  2007/04/17 19:47:01 34  7.9 N 117 28.5 W  5.7    5 km ( 3 mi) NW   of Fontana, CA
Felt widely throughout the Inland Empire and Los Angeles area. If you felt this quake, and would like to
report it, click here.
14285684  2.1  2007/04/17 22:08:10 32 41.6 N 116  3.3 W  8.5    7 km ( 5 mi) SW   of Ocotillo, CA
14285736  2.8  2007/04/18 02:33:37 32 40.6 N 116  3.6 W  9.6    9 km ( 6 mi) SW   of Ocotillo, CA
Felt in Ocotillo and surrounding area.
14285744  2.6  2007/04/18 03:15:46 32 41.7 N 116  3.0 W  8.5    7 km ( 4 mi) SW   of Ocotillo, CA
14285760  3.7  2007/04/18 04:16:57 34 36.6 N 121 32.5 W 10.0   82 km (51 mi) W    of Pt. Arguello, CA
Felt in San Luis Obisbo, Templeton, and surrounding area.
14285800  2.3  2007/04/18 10:25:49 32 41.7 N 116  2.8 W  7.1    7 km ( 4 mi) SW   of Ocotillo, CA
14285840  2.4  2007/04/18 14:48:38 34 30.4 N 118  5.8 W 12.9    8 km ( 5 mi) S    of Palmdale, CA
14285852  3.5  2007/04/18 15:23:12 33 26.9 N 116 35.7 W 11.3   14 km ( 9 mi) SSE  of Anza, CA
Felt in Anza and surrounding area.
14285860  2.1  2007/04/18 15:35:21 32 39.5 N 115 37.6 W 14.2   12 km ( 8 mi) W    of Calexico, CA
14285880  2.0  2007/04/18 17:33:03 33 27.3 N 116 35.1 W 12.5   14 km ( 9 mi) SE   of Anza, CA
14285916  2.3  2007/04/18 23:06:28 33 59.6 N 116 48.2 W 21.6    8 km ( 5 mi) NNW  of Cabazon, CA
14285964  2.9  2007/04/19 04:33:31 32 41.0 N 116  3.9 W 10.8    9 km ( 5 mi) SW   of Ocotillo, CA
Felt in Ocotillo and surrounding area.
14285976  2.8  2007/04/19 05:01:23 32 41.5 N 116  3.7 W 10.6    8 km ( 5 mi) SW   of Ocotillo, CA
Felt in Ocotillo and surrounding area.
14285980  2.2  2007/04/19 05:03:50 33 12.6 N 116 16.8 W 10.6   10 km ( 6 mi) ESE  of Borrego Springs, CA
14285988  2.5  2007/04/19 05:30:33 32 42.1 N 116  3.6 W  9.2    7 km ( 5 mi) WSW  of Ocotillo, CA
14286000  2.1  2007/04/19 06:08:41 32 41.1 N 116  3.0 W 10.2    8 km ( 5 mi) SW   of Ocotillo, CA
14286032  2.3  2007/04/19 08:45:25 32 14.0 N 117 31.4 W  3.5   57 km (36 mi) SW   of San Ysidro, CA
14286080  2.3  2007/04/19 12:27:52 32 38.8 N 116  3.2 W  9.8   11 km ( 7 mi) SSW  of Ocotillo, CA
14286144  2.4  2007/04/19 16:24:16 32 54.3 N 115 31.8 W 19.2    6 km ( 4 mi) S    of Brawley, CA
14286156  2.4  2007/04/19 16:54:24 33 30.0 N 117  3.3 W 40.2   22 km (14 mi) NE   of Fallbrook, CA
14286160  2.5  2007/04/19 16:58:00 34  3.2 N 117  7.8 W 15.4    4 km ( 3 mi) E    of Redlands, CA
Felt in Redlands and surrounding area.

April 15, 2007

M4.2 5 mi SW of Ocotillo, CA

Filed under: Felt Earthquakes, Significant Events — dollar @ 3:39 pm

A M4.2 earthquake at 03:57 PM PDT was located 5 mi SW of Ocotillo, CA. It was felt as far as the San Diego area. This event is another in a continuing series of moderate earthquakes in this area. Since January 2006 there have been 19 quakes of magnitude 3.0 or greater. This is the 4th greater than M4 in the past 16 months. -rsd.

April 12, 2007

Weekly Report – April 12, 2007

Filed under: Weekly — Anthony Guarino @ 4:10 pm




Southern California Earthquakes in the Past Week


Anthony Guarino
Seismological Laboratory


Sue HoughU. S. Geological Survey

California Institute of Technology

April 12, 2007


This report covers the seven day period ending 17:00 on April 12, 2007. During this period we detected and analyzed 151 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
-------------------------------------------------------------------------------------------

14283172  2.3  2007/04/06 01:54:28 33  9.9 N 116  6.9 W 12.5    3 km ( 2 mi) NNE  of Ocotillo Wells, CA
14283212  2.1  2007/04/06 09:13:04 33 39.3 N 116 43.1 W 17.6   10 km ( 6 mi) S    of Idyllwild, CA
14283248  2.9  2007/04/06 20:13:58 34 30.9 N 118  5.9 W 11.0    7 km ( 4 mi) S    of Palmdale, CA
Felt in Palmdale and Lancaster
14283304  2.3  2007/04/07 12:30:01 32 43.0 N 116  1.8 W  6.4    4 km ( 2 mi) WSW  of Ocotillo, CA
14283320  2.7  2007/04/07 16:09:41 35 31.5 N 118 27.5 W  8.3   12 km ( 8 mi) S    of town of Lake Isabella, CA
14283328  2.6  2007/04/07 20:21:58 33 10.0 N 116  2.9 W  9.8    8 km ( 5 mi) ENE  of Ocotillo Wells, CA
12286275  2.2  2007/04/08 18:27:30 32 54.8 N 115 30.9 W 21.3    6 km ( 4 mi) SSE  of Brawley, CA
14283876  3.4  2007/04/10 06:27:24 34  4.2 N 118 57.1 W 15.4    3 km ( 2 mi) NNW  of Leo Carrillo State Beach, CA
Felt at Leo Carrillo State Beach and surrounding area
14284168  2.3  2007/04/10 14:27:53 32 23.6 N 115  5.2 W  7.0   49 km (30 mi) SE   of Calexico, CA
14284728  2.1  2007/04/11 14:41:35 34  4.8 N 117 16.2 W  7.0    4 km ( 2 mi) SE   of San Bernardino, CA
14284740  2.3  2007/04/11 14:59:22 33 42.9 N 116 43.5 W 18.2    3 km ( 2 mi) SSW  of Idyllwild, CA
14284764  2.2  2007/04/11 15:44:36 33 49.4 N 116 46.2 W 18.7   10 km ( 6 mi) NNW  of Idyllwild, CA
14284808  2.0  2007/04/12 04:32:54 32 55.5 N 115 33.1 W 17.3    4 km ( 3 mi) SSW  of Brawley, CA
14284812  2.1  2007/04/12 07:20:51 33 40.0 N 116 44.9 W 15.6    9 km ( 6 mi) SSW  of Idyllwild, CA
14284820  2.2  2007/04/12 09:05:27 33 54.5 N 118 20.3 W 11.0    1 km ( 1 mi) SE   of Hawthorne, CA

Small quake in Hawthorne

Filed under: Felt Earthquakes — kate @ 9:48 am

A very small quake (M2.2) seems to have been felt in Hawthorne & surrounding areas this morning. The epicenter was located in Hawthorne & the time was 9:05 am.

April 10, 2007

Earthquake felt in Malibu area

Filed under: Felt Earthquakes — kate @ 7:06 am

At 6:27 am this morning, a M3.4 earthquake was felt in the Malibu area, from Oxnard to Simi Valley. The peak intensity reported was MMI IV, enough to wake people up. The epicenter was located 2 miles north-northwest of Leo Carrillo State Beach.

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