SCSN Earthquake Commentary

September 25, 2003

Commentary

Filed under: Weekly — kate @ 12:00 am


Southern California Earthquakes in the Past Week


Anthony Guarino ,


Seismological Laboratory

Lucy Jones,

U. S. Geological Survey

California Institute of Technology

Septmember 25, 2003

The time period covered is 5 pm on Thursday, September 18, 2003 (PDT)
through 5 pm on Thursday, Septmeber 25 (PDT). During this period
we dectected and analysed 182 earthquakes. Click
here to see a map.

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. PDT Date   PDT Time  Lat.       Long.    Depth  Descriptive location
-------------------------------------------------------------------------------------------

#EVID     MAG  YYYY/MM/DD HH:mm:SS LAT       LON        DEP     LOCATION

13992568  2.1  2003/09/19 23:37:53 33  2.2 N 117 40.6 W  7.0   33 km (20 mi) WSW  of Oceanside, CA
13993308  2.0  2003/09/23 05:39:51 34  0.2 N 117 13.3 W  6.5    6 km ( 4 mi) SSE  of Loma Linda, CA  

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September 18, 2003

Commentary

Filed under: Old Commentary — kate @ 7:42 am

At 5:51 pm yesterday, there was a very small quake M2.2 in the South Bay area, 2 miles north of Carson. It was reported felt in Torrance.

Commentary

Filed under: Weekly — kate @ 12:00 am


Southern California Earthquakes in the Past Week


Anthony Guarino ,


Seismological Laboratory

Lucy Jones,

U. S. Geological Survey

California Institute of Technology

Septmember 18, 2003

The time period covered is 5 pm on Thursday, September 11, 2003 (PDT)
through 5 pm on Thursday, Septmeber 18 (PDT). During this period
we dectected and analysed 157 earthquakes. Click
here to see a map.

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. PDT Date   PDT Time  Lat.       Long.    Depth  Descriptive location
-------------------------------------------------------------------------------------------

#EVID     MAG  YYYY/MM/DD HH:mm:SS LAT       LON        DEP     LOCATION
 9944421  2.0  2003/09/11 18:06:36 32 36.5 N 115 44.7 W  4.8   24 km (15 mi) WSW  of Calexico, CA
 9944469  2.1  2003/09/12 05:37:24 33 44.2 N 118 16.9 W 14.4    4 km ( 2 mi) NNE  of Pt. Fermin San Pedro, CA
 9944637  3.4  2003/09/12 17:59:26 34 20.4 N 118 44.6 W 15.6    8 km ( 5 mi) NNW  of Simi Valley, CA
 FELT FROM SOUTH LOS ANGELES TO MONTEREY PARK, FROM FROM VENTURA TO CASTAIC
 9944669  2.9  2003/09/13 01:23:25 34 52.6 N 119 29.1 W  4.0   30 km (18 mi) S    of Taft, CA
 9944685  2.1  2003/09/13 06:59:01 34 21.7 N 116  7.6 W  6.6   26 km (16 mi) NNW  of Twentynine Palms, CA
 9944785  3.1  2003/09/13 19:32:30 33 45.6 N 116  1.7 W  5.6   18 km (11 mi) ENE  of Indio, CA
 FELT IN INDIO
 9944797  2.2  2003/09/13 22:30:11 34 33.2 N 116 14.9 W  5.6   47 km (29 mi) N    of Joshua Tree, CA
 9944821  2.2  2003/09/14 02:26:37 32  9.7 N 116  8.5 W  7.0   65 km (41 mi) SSW  of Ocotillo, CA
 9944941  3.0  2003/09/14 17:20:48 33 10.8 N 115 36.3 W  1.6    3 km ( 2 mi) ENE  of Obsidian Butte, CA
 FELT IN CALIPATRIA AND NILAND
 9944973  2.1  2003/09/14 22:33:37 36  6.2 N 117 54.4 W  3.2    7 km ( 5 mi) NNE  of Coso Junction, CA
13992204  2.2  2003/09/17 17:51:24 33 51.5 N 118 16.5 W 19.9    3 km ( 2 mi) N    of Carson, CA
 FELT IN TORRANCE
13992240  2.0  2003/09/17 23:17:30 36  5.1 N 117 50.7 W  0.1   10 km ( 6 mi) ENE  of Coso Junction, CA
13992288  2.1  2003/09/18 08:13:08 36  6.0 N 117 54.3 W  5.6    7 km ( 4 mi) NNE  of Coso Junction, CA
12152263  2.1  2003/09/18 11:50:31 36  2.3 N 117 48.7 W  0.0   12 km ( 8 mi) E    of Coso Junction, CA  

### Number of rows returned:14 

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September 15, 2003

Commentary

Filed under: Old Commentary — kate @ 7:40 am

Several earthquakes of feelable size occurred over the weekend:

First, there was a M3.4 at 5:59 pm on Friday, located 5 miles north-northwest of Simi Valley. It was felt widely in the Simi Valley, western San Fernando Valley, and the Thousand Oaks/Newbury Park area, as far south as El Segundo & as far east as Glendale. Peak intensity was Modified Mercalli level III.

There was also a M2.9 at 1:23 am on Saturday, located 19 miles south of Taft, or 31 miles west of Frazier Park. We would not expect to get “felt reports” on this quake, due to its remote location.

Another possible feelable quake occurred at 7:32 pm on Saturday. It was a M3.0, located 11 miles east-northeast of Indio. It might have been felt in Indio or Mecca, but we have no reports.

Another M3.0 occurred at 5:20 pm on Sunday, this time 2 miles east-northeast of Obsidian Butte, in the northern Imperial Valley. This quake would have been noticable in Westmorland/Calipatria area.

September 11, 2003

Commentary

Filed under: Old Commentary — kate @ 1:02 pm

There appears to be a small earthquake swarm developing just south of the U.S./Mexico border, near the Imperial Valley. The largest so far was a M3.7 at 10:03 am this morning. It was felt in Calexico & El Centro, also in Yuma AZ.

Commentary

Filed under: Weekly — kate @ 12:00 am


Southern California Earthquakes in the Past Week


Anthony Guarino ,


Seismological Laboratory

Lucy Jones,

U. S. Geological Survey

California Institute of Technology

Septmenber 11, 2003

The time period covered is 5 pm on Thursday, September 4, 2003 (PDT)
through 5 pm on Thursday, Septmeber 11 (PDT). During this period
we dectected and analysed 193 earthquakes. Click
here to see a map.

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. PDT Date   PDT Time  Lat.       Long.    Depth  Descriptive location
-------------------------------------------------------------------------------------------

#EVID     MAG  YYYY/MM/DD HH:mm:SS LAT       LON        DEP     LOCATION
 9943117  2.3  2003/09/06 02:54:16 36  8.1 N 117 54.7 W  5.6   11 km ( 7 mi) NNE  of Coso Junction, CA
 9943125  2.6  2003/09/06 03:29:24 34  1.2 N 117  6.3 W 18.0    7 km ( 4 mi) WSW  of Yucaipa, CA
 9943129  2.3  2003/09/06 03:30:19 34  1.2 N 117  6.3 W 18.8    7 km ( 4 mi) WSW  of Yucaipa, CA
 9943249  2.8  2003/09/06 09:50:08 35 38.6 N 117 33.7 W  5.6   10 km ( 6 mi) ENE  of Ridgecrest, CA
 9943257  2.9  2003/09/06 10:03:41 35 38.6 N 117 34.4 W  2.9    9 km ( 5 mi) ENE  of Ridgecrest, CA
 9943501  2.7  2003/09/07 13:19:26 32 22.4 N 115 13.4 W  7.0   42 km (26 mi) SE   of Calexico, CA
 9943557  2.1  2003/09/08 06:22:37 32 22.0 N 115 13.1 W  7.0   42 km (26 mi) SE   of Calexico, CA
 9943737  2.1  2003/09/08 18:08:57 36  7.6 N 117 54.6 W  4.2   10 km ( 6 mi) NNE  of Coso Junction, CA
 9943745  2.4  2003/09/08 18:48:46 34 58.9 N 116 48.2 W  5.6   23 km (14 mi) ENE  of Barstow, CA
 9944001  3.1  2003/09/10 08:27:40 33 19.0 N 116 21.6 W 14.6    7 km ( 4 mi) N    of Borrego Springs, CA
 9944053  2.2  2003/09/10 11:23:45 32 15.5 N 115 47.7 W  7.0   54 km (33 mi) SSW  of Calexico, CA
 9944273  2.6  2003/09/11 09:06:42 32 34.5 N 115 17.3 W  7.0   22 km (14 mi) ESE  of Calexico, CA
 9944293  2.6  2003/09/11 09:56:27 32 27.5 N 115 15.8 W  7.0   32 km (20 mi) SE   of Calexico, CA
 9944301  3.7  2003/09/11 10:03:40 32 31.0 N 115 16.6 W  6.0   26 km (16 mi) SE   of Calexico, CA
 FELT IN CALEXICO, EL CENTRO, AND YUMA, AZ
 9944313  2.0  2003/09/11 10:19:11 32 32.1 N 115 16.0 W  7.0   26 km (16 mi) SE   of Calexico, CA
 9944337  2.7  2003/09/11 11:23:54 32 31.8 N 115 17.4 W  7.0   25 km (15 mi) SE   of Calexico, CA
 9944341  2.1  2003/09/11 12:09:09 32 31.2 N 115 17.2 W  7.0   26 km (16 mi) SE   of Calexico, CA
 9944381  2.2  2003/09/11 14:35:41 32 29.0 N 115 16.5 W  7.0   29 km (18 mi) SE   of Calexico, CA  

### Number of rows returned:18 

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September 10, 2003

Commentary

Filed under: Old Commentary — kate @ 10:17 am

There was a M3.1 in the Clark Lake area, in the San Jacinto fault zone 4 miles north of Borrego Springs, this morning. The time was 8:27 am. As far as we know, it was not felt.

September 4, 2003

Commentary

Filed under: Weekly — kate @ 12:00 am


Southern California Earthquakes in the Past Week


Anthony Guarino ,


Seismological Laboratory

Lucy Jones,

U. S. Geological Survey

California Institute of Technology

Septmenber 4, 2003

The time period covered is 5 pm on Thursday, August 28, 2003 (PDT)
through 5 pm on Thursday, Septmeber 4 (PDT). During this period
we dectected and analysed 191 earthquakes. Click
here to see a map.

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. PDT Date   PDT Time  Lat.       Long.    Depth  Descriptive location
-------------------------------------------------------------------------------------------

#EVID     MAG  YYYY/MM/DD HH:mm:SS LAT       LON        DEP     LOCATION
 9941565  2.1  2003/08/28 18:10:06 34 21.8 N 118 45.5 W  9.6   11 km ( 7 mi) NNW  of Simi Valley, CA
 9941737  2.3  2003/08/29 15:56:12 34 56.1 N 116 45.6 W  5.8   25 km (15 mi) ENE  of Barstow, CA
 9941797  2.2  2003/08/30 03:26:26 35  6.3 N 116 59.5 W  4.3   24 km (15 mi) N    of Barstow, CA
 9941889  2.5  2003/08/30 13:01:33 32 57.2 N 115 48.9 W  4.2   20 km (13 mi) WSW  of Westmorland, CA
 9941893  2.1  2003/08/30 13:06:32 34  2.0 N 117 14.4 W 17.6    2 km ( 1 mi) SE   of Loma Linda, CA
 9941973  2.1  2003/08/31 00:13:50 32 14.7 N 115 47.4 W  7.0   55 km (34 mi) SSW  of Calexico, CA
 9942109  2.1  2003/08/31 15:50:13 34 50.4 N 118 57.6 W 17.1    3 km ( 2 mi) NNW  of Frazier Park, CA
 9942165  2.0  2003/09/01 00:55:35 34 40.9 N 120 23.2 W  4.7    8 km ( 5 mi) NE   of Lompoc, CA
 9942253  2.2  2003/09/01 15:38:05 34  2.9 N 117 15.2 W 17.3    0 km ( 0 mi) NE   of Loma Linda, CA
 9942265  2.2  2003/09/01 18:46:49 33 27.2 N 116 32.9 W 10.0   16 km (10 mi) SE   of Anza, CA
 9942381  2.0  2003/09/02 13:49:37 32 48.9 N 116 12.8 W  8.0   22 km (14 mi) WNW  of Ocotillo, CA
 9942481  2.0  2003/09/03 02:47:46 32 46.1 N 115 24.9 W 13.4   13 km ( 8 mi) ESE  of El Centro, CA
 9942525  2.1  2003/09/03 10:41:15 32 15.6 N 115 46.5 W  7.0   52 km (33 mi) SSW  of Calexico, CA
 9942685  2.3  2003/09/03 20:24:20 34  8.6 N 117  2.9 W  7.8    9 km ( 5 mi) SE   of Running Springs, CA  

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