SCSN Earthquake Commentary

April 29, 2004

Commentary

Filed under: Weekly — kate @ 12:00 am



Southern California Earthquakes in the Past Week


Nick Scheckel ,

Seismological Laboratory
Lucy Jones,

U. S. Geological Survey
California Institute of Technology

April 29, 2004

The time period covered is 5 pm on Thursday, April 22 (PDT)
through 5 pm on Thursday, April 29 (PDT). During this period
we dectected and analysed 233 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. PST Date   PST Time  Lat.       Long.    Depth  Descriptive location
-------------------------------------------------------------------------------------------
14048932  2.0  2004/04/23 00:26:42 34 20.3 N 116 49.7 W  6.8    8 km ( 5 mi) NNE  of Big Bear City, CA
14049000  2.1  2004/04/23 08:27:33 35 31.8 N 116 13.9 W  7.0   33 km (20 mi) NNW  of Baker, CA
14049048  2.0  2004/04/23 10:50:03 34 17.7 N 116 52.6 W  5.3    4 km ( 2 mi) NW   of Big Bear City, CA
14049052  2.2  2004/04/23 10:50:43 34 17.8 N 116 52.6 W  5.3    4 km ( 3 mi) NNW  of Big Bear City, CA
14049136  2.2  2004/04/23 17:48:55 33 59.1 N 117 12.4 W 13.2    8 km ( 5 mi) SSW  of Redlands, CA
14049184  2.2  2004/04/24 02:15:07 33 36.7 N 118 19.2 W  4.3   11 km ( 7 mi) SSW  of Pt. Fermin San Pedro, CA
14049368  2.0  2004/04/24 15:00:03 33 29.2 N 116 45.1 W  9.7   11 km ( 7 mi) SW   of Anza, CA
14049400  2.6  2004/04/24 16:48:56 33 12.1 N 118 22.8 W  5.6   17 km (10 mi) SSW  of Avalon Catalina Island, CA
14049456  2.0  2004/04/24 22:53:13 33 59.7 N 116 25.3 W  7.7    8 km ( 5 mi) ENE  of Desert Hot Springs, CA
14049476  2.2  2004/04/25 03:26:05 32 14.1 N 115  8.7 W  6.0   58 km (36 mi) SE   of Calexico, CA
14049652  2.2  2004/04/25 23:11:28 34  0.8 N 117  1.0 W 18.7    3 km ( 2 mi) SSE  of Yucaipa, CA
14049684  2.6  2004/04/26 04:19:09 35 58.5 N 116 45.4 W  2.4   37 km (23 mi) SE   of Telescope Peak, CA
14049688  2.3  2004/04/26 05:12:28 32  6.0 N 115 43.0 W 19.9   67 km (41 mi) SSW  of Calexico, CA
14049820  2.8  2004/04/26 16:26:59 36 29.2 N 116 34.7 W  1.1   25 km (15 mi) E    of Furnace Creek, CA
14049824  2.2  2004/04/26 17:08:44 32  6.2 N 115 23.1 W  7.0   64 km (40 mi) S    of Calexico, CA
14049940  2.7  2004/04/27 01:33:59 34 19.5 N 116 27.5 W  9.2   23 km (14 mi) N    of Yucca Valley, CA
14050068  2.5  2004/04/27 10:13:42 33 57.8 N 118 55.8 W 15.1    9 km ( 6 mi) S    of Leo Carrillo State Beach, CA
14050076  2.7  2004/04/27 10:15:27 34  3.4 N 117 15.5 W 12.4    1 km ( 1 mi) NNW  of Loma Linda, CA
          Felt in Loma Linda, San Bernardino, Riverside & Redlands.
14050116  3.0  2004/04/27 12:21:03 34  3.5 N 117 15.6 W 12.6    1 km ( 1 mi) NNW  of Loma Linda, CA
          Felt in same locations as above.
14050168  2.4  2004/04/27 17:35:47 36 34.1 N 116 39.9 W  6.9   21 km (13 mi) NE   of Furnace Creek, CA
10003913  2.5  2004/04/27 20:04:57 32 44.8 N 115 25.3 W 13.3   11 km ( 7 mi) NE   of Calexico, CA
10004005  2.6  2004/04/28 03:26:44 34  4.0 N 117 15.6 W 12.4    2 km ( 1 mi) NNW  of Loma Linda, CA
10004205  2.4  2004/04/28 18:43:45 32 11.8 N 115 22.0 W  7.0   54 km (33 mi) SSE  of Calexico, CA
10004301  2.5  2004/04/29 10:34:58 34  3.6 N 117 15.8 W 12.2    1 km ( 1 mi) NW   of Loma Linda, CA
-------------------------------------------------------------------------------------------


April 27, 2004

Commentary

Filed under: Old Commentary — kate @ 1:01 pm

Ooops. We just had another at the same location: 1 mile north-northwest of Loma Linda. The magnitude was ML3.0 & the time was 12:21 pm. It was felt in the same areas as the earlier ML2.7 was.

Commentary

Filed under: Old Commentary — kate @ 12:03 pm

There was a small quake late this morning near Loma Linda. The magnitude was ML2.7 & the time was 10:15 am. It seems to have been felt in Loma Linda, San Bernardino, Riverside & Redlands.

April 22, 2004

Commentary

Filed under: Weekly — kate @ 12:00 am



Southern California Earthquakes in the Past Week


Nick Scheckel ,

Seismological Laboratory
Lucy Jones,

U. S. Geological Survey
California Institute of Technology

April 22, 2004

The time period covered is 5 pm on Thursday, April 15 (PDT)
through 5 pm on Thursday, April 22 (PDT). During this period
we dectected and analysed 204 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. PST Date   PST Time  Lat.       Long.    Depth  Descriptive location
-------------------------------------------------------------------------------------------
10000881  2.0  2004/04/15 22:30:41 34 33.3 N 116 14.7 W  9.5   47 km (29 mi) N    of Joshua Tree, CA
10000889  2.3  2004/04/15 22:45:55 32 40.6 N 115 55.8 W  3.1    9 km ( 5 mi) SE   of Ocotillo, CA
10000969  2.2  2004/04/16 06:54:47 32 10.5 N 115 24.3 W  6.0   56 km (34 mi) S    of Calexico, CA
10001081  2.7  2004/04/16 13:55:19 34 51.3 N 120 14.5 W  0.1   21 km (13 mi) ESE  of Santa Maria, CA
10001085  2.1  2004/04/16 14:24:41 35 31.8 N 117 30.8 W  4.7   17 km (11 mi) SE   of Ridgecrest, CA
10001141  2.0  2004/04/16 22:08:36 33 18.4 N 116 51.6 W 12.1    5 km ( 3 mi) S    of Palomar Observatory, CA
10001229  2.1  2004/04/17 09:58:28 34  3.6 N 117 15.8 W 11.8    2 km ( 1 mi) NW   of Loma Linda, CA
10001281  2.8  2004/04/17 15:56:04 32  9.2 N 115 24.9 W  6.0   58 km (36 mi) S    of Calexico, CA
10001297  2.5  2004/04/17 16:29:25 32  1.4 N 115 42.7 W 18.2   75 km (46 mi) SSW  of Calexico, CA
10001321  2.6  2004/04/17 18:13:40 32 50.0 N 115 37.6 W 15.3    8 km ( 5 mi) WNW  of El Centro, CA
10001445  2.1  2004/04/18 09:33:27 34 43.4 N 117  4.6 W  4.5   19 km (12 mi) SSW  of Barstow, CA
10001525  2.4  2004/04/18 16:10:21 34 38.4 N 116 31.6 W 10.1   44 km (27 mi) ENE  of Lucerne Valley, CA
10001541  2.3  2004/04/18 17:36:10 34 49.6 N 116 23.1 W  3.1   57 km (35 mi) SSW  of Baker, CA
10001873  2.3  2004/04/20 00:36:55 35 58.7 N 116 45.5 W  3.0   36 km (23 mi) SE   of Telescope Peak, CA
10001897  3.2  2004/04/20 05:41:26 33 33.3 N 118 22.1 W 15.5   18 km (11 mi) SSW  of Pt. Fermin San Pedro, CA
               Felt slightly on Catalina Island & in San Pedro.
14048204  2.5  2004/04/20 14:23:14 34 42.2 N 116 18.0 W  4.5   63 km (39 mi) N    of Joshua Tree, CA
14048256  2.9  2004/04/20 16:30:16 35 58.5 N 116 45.5 W  3.0   37 km (23 mi) SE   of Telescope Peak, CA
14048400  2.5  2004/04/21 05:56:08 35 31.6 N 116 14.0 W  6.0   33 km (20 mi) NNW  of Baker, CA
14048500  2.3  2004/04/21 13:53:52 34 21.2 N 118 40.0 W 13.8    9 km ( 6 mi) NNE  of Simi Valley, CA
14048648  2.9  2004/04/22 05:46:49 33 10.9 N 115 35.8 W  1.0    4 km ( 2 mi) ENE  of Obsidian Butte, CA
14048724  2.0  2004/04/22 09:44:55 36 22.2 N 116 49.9 W  7.0    9 km ( 6 mi) S    of Furnace Creek, CA
14048832  2.2  2004/04/22 15:07:56 34 17.9 N 116 50.0 W  4.1    4 km ( 3 mi) NNE  of Big Bear City, CA
-------------------------------------------------------------------------------------------


April 20, 2004

Commentary

Filed under: Old Commentary — kate @ 11:35 am

Early this morning, at 5:41 am, there was a ML3.1 quake offshore, between Palos Verdes & Catalina Island. The epicenter was located in the ocean floor 14 miles south of Rancho Palos Verdes. It was reported felt slightly on Catalina Island & in San Pedro.

April 16, 2004

Commentary

Filed under: Old Commentary — kate @ 2:18 pm

At 1:55 pm this afternoon, there was a ML2.7 quake in the vicinity of Santa Maria. The epicenter was located 8 miles north-northeast of Los Alamos or 13 miles east-southeast of Santa Maria. So far, there have been no “felt reports”.

April 15, 2004

Commentary

Filed under: Old Commentary — kate @ 12:17 pm

Last night (Wednesday) at 7:28pm a M3.4 earthquake occurred 1 mile northwest of Beaumont. It was felt mostly to the south with a report coming from as far as Oceanside. The maximum intensity reported was Modified Mercally IV.

Commentary

Filed under: Weekly — kate @ 12:00 am



Southern California Earthquakes in the Past Week


Nick Scheckel ,

Seismological Laboratory
Lucy Jones,

U. S. Geological Survey
California Institute of Technology

April 15, 2004

The time period covered is 5 pm on Thursday, April 8 (PDT)
through 5 pm on Thursday, April 15 (PDT). During this period
we dectected and analysed 212 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. PST Date   PST Time  Lat.       Long.    Depth  Descriptive location
-------------------------------------------------------------------------------------------
 9998357  2.4  2004/04/09 02:10:32 35 58.3 N 116 45.4 W  3.0   37 km (23 mi) SE   of Telescope Peak, CA
 9998581  2.1  2004/04/09 15:37:38 34 18.3 N 118 28.3 W  6.1    4 km ( 2 mi) NW   of Pacoima, CA
 9998593  2.4  2004/04/09 16:04:10 33 54.5 N 116 46.5 W 17.4    2 km ( 1 mi) SSE  of Cabazon, CA
 9998981  2.3  2004/04/10 15:32:07 32 12.4 N 115 47.3 W  6.0   58 km (36 mi) SSW  of Calexico, CA
 9999229  2.2  2004/04/11 07:43:37 36  5.7 N 119 42.6 W  7.0   45 km (28 mi) SW   of Visalia, CA
 9999325  2.1  2004/04/11 13:12:29 34 22.8 N 119 18.1 W  5.0    9 km ( 6 mi) SSW  of Ojai, CA
 9999337  2.9  2004/04/11 13:40:10 35  1.2 N 119 30.2 W 14.8   14 km ( 9 mi) SSW  of Taft, CA
 9999437  2.1  2004/04/11 19:54:16 34 21.6 N 116  7.5 W  6.3   26 km (16 mi) NNW  of Twentynine Palms, CA
 9999629  2.4  2004/04/12 10:30:57 34 54.1 N 119 33.0 W 13.6   28 km (17 mi) SSW  of Taft, CA
10000085  2.5  2004/04/13 10:42:09 34  0.9 N 117 14.2 W 17.3    4 km ( 2 mi) SSE  of Loma Linda, CA
10000269  2.3  2004/04/13 21:35:43 35 12.9 N 119  3.5 W 26.0   18 km (11 mi) SSW  of Bakersfield, CA
10000373  2.2  2004/04/14 02:52:05 32 13.2 N 115 28.7 W  6.0   50 km (31 mi) S    of Calexico, CA
10000605  3.4  2004/04/14 19:28:08 33 56.6 N 116 59.5 W 16.8    2 km ( 1 mi) NW   of Beaumont, CA
          Felt mostly to the south with a report coming from as far as Oceanside.
          The maximum intensity reported was Modified Mercally IV.
-------------------------------------------------------------------------------------------


April 12, 2004

Commentary

Filed under: Old Commentary — kate @ 8:28 am

On Sunday afternoon, at 1:40 pm, there was a ML3.0 quake 9 miles south-southwest of Taft, or 37 miles southwest of Bakersfield. We do not have any felt reports, but it may have been felt in the epicentral area.

April 8, 2004

Commentary

Filed under: Old Commentary — kate @ 5:05 pm

There was yet another quake this morning, at 11:19AM. This one was a M2.8, located 4 miles north of Big Bear City (6 miles NNE of Big Bear Lake). It was reported felt in the epicentral area. Peak intensity was Modified Mercalli II.

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