SCSN Earthquake Commentary

December 12, 2002

Commentary

Filed under: Old Commentary — kate @ 1:31 pm

There was another quake in northern Baja (Mexico) early this afternoon, at 1:03 pm. It was a M4.2 that was located 26 miles southeast of Calexico. Note that this is an entirely different location than the M4.8 on Tuesday. For this reason, the two M4+ quakes are likely to be unrelated. Today’s quake was felt in the El Centro & Mexicali areas.

Commentary

Filed under: Old Commentary — kate @ 11:23 am

The Southern California Seismic Network has experienced a system glitch this morning that has produced a couple of hundred false “ghost quakes”. We are currently fixing the problem & removing them from the map. Thank you for your patience.

Commentary

Filed under: Old Commentary — kate @ 7:20 am

Yesterday evening at 6:47 pm, there was a M3.3 aftershock of the M4.8 Baja quake. The epicenter occurred 35 miles south-southwest of Calexico. This quake has not been reported felt in the U.S.

Note that the Northern California Seismic Network (U.S.G.S. at Menlo Park & U.C. Berkeley) report a M3.5 quake at 9:58 pm in the Mammoth area, 7 miles east-southeast of Tom’s Place. That quake was felt in the epicentral area.

Commentary

Filed under: Weekly — kate @ 12:00 am

Southern California Earthquakes in the Past Week

Kate Hutton ,

Seismological Laboratory

Lucy Jones,

U. S. Geological Survey

California Institute of Technology

December 13, 2002


The time period covered is 4 pm on Thursday, December 5 (PDT)

through 4 pm on Thursday, December 12 (PDT). During this period

we dectected and analysed 194 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. Local Date Local Time Lat.      Long.    Depth  Descriptive location

        -------------------------------------------------------------------------------------------

13916172  2.0  2002/12/06 15:45:10 36 16.5 N 118 18.2 W  7.0   27 km (17 mi) W    of Olancha, CA
13916204  2.2  2002/12/06 18:03:41 32 12.7 N 115 49.9 W  7.0   60 km (37 mi) SSW  of Calexico, CA
13916244  2.1  2002/12/06 20:32:01 36 16.6 N 118 18.4 W  7.0   27 km (17 mi) W    of Olancha, CA
13916388  2.0  2002/12/07 08:55:04 34  4.2 N 117 50.1 W 13.9    5 km ( 3 mi) ESE  of Covina, CA
13916404  2.2  2002/12/07 09:47:21 34  4.6 N 117 49.6 W 12.3    6 km ( 4 mi) ESE  of Covina, CA
13916468  2.3  2002/12/07 16:44:38 33  9.8 N 116  1.8 W  5.3   10 km ( 6 mi) ENE  of Ocotillo Wells, CA
13916504  2.9  2002/12/07 19:47:00 32 41.5 N 118  1.3 W  7.0   33 km (21 mi) ESE  of San Clemente Is.
13916596  2.2  2002/12/08 07:27:28 32  7.5 N 115 47.7 W  7.1   67 km (41 mi) SSW  of Calexico, CA
13916604  2.3  2002/12/08 07:47:47 34 13.4 N 117  2.0 W  7.0    7 km ( 4 mi) ENE  of Running Springs, CA
13916736  2.0  2002/12/08 16:17:57 34 35.2 N 116 15.3 W  3.5   50 km (31 mi) N    of Joshua Tree, CA
13917092  2.1  2002/12/09 22:14:37 32 38.0 N 116  6.5 W  3.1   16 km (10 mi) SW   of Ocotillo, CA
13917100  2.2  2002/12/09 22:44:24 36 16.6 N 118 34.1 W  5.6   42 km (26 mi) SW   of Mt. Whitney, CA
13917168  2.1  2002/12/10 07:02:03 33 39.5 N 116 46.6 W 13.1   11 km ( 7 mi) SSW  of Idyllwild, CA
13917208  2.1  2002/12/10 09:09:24 33 58.2 N 117 45.3 W 14.3    6 km ( 4 mi) ESE  of Diamond Bar, CA
13917220  2.1  2002/12/10 09:59:59 34 41.6 N 116 22.2 W  2.5   60 km (37 mi) ENE  of Lucerne Valley, CA
13917228  2.0  2002/12/10 10:25:36 34 21.5 N 118 42.9 W 16.9    9 km ( 6 mi) N    of Simi Valley, CA
13917260  4.8  2002/12/10 13:04:00 32 13.9 N 115 47.9 W  7.0   56 km (35 mi) SSW  of Calexico, CA
               FELT in San Diego & Imperial Valley region, by a few as far as Orange County.
13917272  4.0  2002/12/10 13:47:15 32 13.5 N 115 47.7 W  7.0   57 km (35 mi) SSW  of Calexico, CA
               FELT in Imperial Valley.
13917300  2.0  2002/12/10 14:39:42 34  4.1 N 117 50.2 W 13.4    5 km ( 3 mi) ESE  of Covina, CA
13917316  2.0  2002/12/10 15:16:03 32 16.4 N 115 48.6 W  6.2   53 km (33 mi) SW   of Calexico, CA
13917348  2.2  2002/12/10 16:59:34 32 13.3 N 115 48.6 W  7.0   58 km (36 mi) SSW  of Calexico, CA
13917352  2.1  2002/12/10 17:32:19 32 16.0 N 115 48.2 W  7.0   53 km (33 mi) SSW  of Calexico, CA
13917400  2.2  2002/12/10 23:08:13 32 13.3 N 115 47.8 W  7.0   57 km (36 mi) SSW  of Calexico, CA
13917412  2.6  2002/12/11 00:04:49 34 23.1 N 118 37.4 W  7.6    6 km ( 3 mi) W    of Valencia, CA
               FELT in Valencia & Santa Clarita area.
13917420  2.1  2002/12/11 01:13:50 32 15.6 N 115 48.7 W  7.0   54 km (34 mi) SSW  of Calexico, CA
13917508  2.0  2002/12/11 04:17:03 34 47.7 N 116 16.0 W  4.5   55 km (34 mi) SSW  of Baker, CA
13917524  2.1  2002/12/11 05:52:10 32 14.8 N 115 47.9 W  7.0   55 km (34 mi) SSW  of Calexico, CA
13917540  3.2  2002/12/11 07:20:37 33 56.9 N 119 11.3 W  0.9   22 km (14 mi) S    of Port Hueneme, CA
               FELT in Ventura, Camarillo.
 9867569  2.0  2002/12/11 13:06:34 34  1.4 N 118 58.7 W  9.8    4 km ( 3 mi) WSW  of Leo Carrillo State Beach, CA
 9867721  2.2  2002/12/11 18:20:38 32 15.8 N 115 47.6 W  7.0   53 km (33 mi) SSW  of Calexico, CA
 9867737  3.3  2002/12/11 18:47:03 32 13.8 N 115 47.2 W  7.0   56 km (35 mi) SSW  of Calexico, CA
 9867801  2.3  2002/12/12 00:51:11 34 39.9 N 117 30.5 W  9.6   24 km (15 mi) NW   of Victorville, CA
 9867861  2.4  2002/12/12 03:38:31 33 42.1 N 116 44.4 W 18.7    5 km ( 3 mi) SSW  of Idyllwild, CA
 9867877  2.6  2002/12/12 04:56:35 34 43.5 N 116 18.4 W  6.9   64 km (40 mi) SSW  of Baker, CA
 9869697  4.2  2002/12/12 13:03:43 32 22.0 N 115 12.1 W  7.0   43 km (27 mi) SE   of Calexico, CA
               FELT in southern Imperial Valley.
 9869777  2.4  2002/12/12 13:13:20 32 15.4 N 115 47.1 W  7.0   53 km (33 mi) SSW  of Calexico, CA
        -------------------------------------------------------------------------------------------

December 11, 2002

Commentary

Filed under: Old Commentary — kate @ 8:08 am

Just after midnight, at 12:04 am, a small quake was felt in the Valencia & Santa Clarita area. It was a M2.6, located 4 miles west of Valencia.

Later, at 7:20 am, a M3.2 earthquake occurred offshore, 14 miles south of Port Hueneme, or 24 miles south-southeast of Ventura. The offshore quake has not been reported felt, although it might have been.

December 10, 2002

Commentary

Filed under: Old Commentary — kate @ 1:34 pm

A M4.8 quake in northern Baja was widely felt in southern California early this afternoon. The time was 1:04 pm & the epicenter was 36 miles south-southeast of Ocotillo or 41 miles south-southwest of El Centro. The quake was widely felt in the Imperial Valley and San Diego areas, with a few reports coming from as far as Orange County.

December 5, 2002

Commentary

Filed under: Weekly — kate @ 12:00 am

Southern California Earthquakes in the Past Week

Kate Hutton ,

Seismological Laboratory

Lucy Jones,

U. S. Geological Survey

California Institute of Technology

December 6, 2002


The time period covered is 4 pm on Wednsday, November 27 (PDT)

through 4 pm on Thursday, December 5 (PDT). During this period

we dectected and analysed 251 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. Local Date Local Time Lat.      Long.    Depth  Descriptive location

        -------------------------------------------------------------------------------------------

13913356  2.3  2002/11/27 21:05:36 34 40.7 N 116 20.6 W  5.6   60 km (38 mi) N    of Joshua Tree, CA
13913368  3.0  2002/11/28 02:05:58 34 48.3 N 116 16.2 W  6.3   54 km (34 mi) SSW  of Baker, CA
13913388  2.5  2002/11/28 04:31:46 34  4.6 N 117 50.2 W 11.6    5 km ( 3 mi) ESE  of Covina, CA
12068207  2.0  2002/11/28 04:55:33 33 19.4 N 115 38.7 W 12.8    9 km ( 5 mi) ESE  of Bombay Beach, CA
13913396  2.6  2002/11/28 05:15:38 32  7.4 N 116 24.6 W  7.0   76 km (47 mi) SE   of San Ysidro, CA
13913404  2.2  2002/11/28 06:45:03 32  7.0 N 116 24.0 W  7.0   77 km (48 mi) SE   of San Ysidro, CA
13913424  2.2  2002/11/28 09:55:12 34 48.0 N 116 16.3 W  6.7   55 km (34 mi) SSW  of Baker, CA
13913564  2.3  2002/11/28 19:45:08 35 19.0 N 118 38.7 W  5.6   21 km (13 mi) NE   of Arvin, CA
13913584  2.1  2002/11/28 21:56:04 33 47.5 N 116  6.8 W  5.6   13 km ( 8 mi) NE   of Indio, CA
13913592  2.2  2002/11/28 22:13:52 33 47.5 N 116  6.6 W  5.6   13 km ( 8 mi) NE   of Indio, CA
13913620  2.3  2002/11/29 00:34:55 33 28.0 N 116 27.1 W  9.3   23 km (14 mi) ESE  of Anza, CA
13913628  2.1  2002/11/29 02:08:42 35 55.7 N 117 42.8 W  4.1   25 km (15 mi) ESE  of Coso Junction, CA
13913648  2.1  2002/11/29 04:43:18 34 41.0 N 116 20.1 W  5.0   61 km (38 mi) N    of Joshua Tree, CA
13913692  2.0  2002/11/29 11:18:52 34  7.0 N 117 26.7 W  8.8    1 km ( 1 mi) NW   of Fontana, CA
13913908  2.4  2002/11/30 00:47:04 33 56.8 N 116 37.8 W 16.4   12 km ( 7 mi) SSW  of Morongo Valley, CA
13913976  2.5  2002/11/30 03:36:19 33 36.1 N 117 49.8 W 14.8    7 km ( 5 mi) S    of Irvine, CA
13914352  2.5  2002/12/01 07:47:03 32  6.7 N 116 25.1 W  7.0   76 km (48 mi) SE   of San Ysidro, CA
13914388  3.1  2002/12/01 09:49:17 33 47.1 N 116  6.9 W  2.7   12 km ( 8 mi) NE   of Indio, CA
               FELT in Palm Desert & La Quinta.
13914436  2.6  2002/12/01 14:57:56 36 16.3 N 118 18.6 W  5.6   27 km (17 mi) W    of Olancha, CA
13914456  2.2  2002/12/01 16:15:21 36 16.1 N 118 18.2 W  5.6   27 km (17 mi) W    of Olancha, CA
13914532  2.3  2002/12/02 02:03:36 33 25.5 N 116 36.9 W 13.5   15 km (10 mi) SSE  of Anza, CA
13914548  2.0  2002/12/02 05:02:35 34  4.3 N 117 49.7 W 11.7    6 km ( 4 mi) ESE  of Covina, CA
13914552  3.3  2002/12/02 05:19:36 33 19.5 N 115 42.0 W  4.0    4 km ( 3 mi) SE   of Bombay Beach, CA
13914704  2.1  2002/12/02 09:34:58 36 16.6 N 118 18.3 W  7.0   27 km (17 mi) W    of Olancha, CA
13914708  2.1  2002/12/02 09:38:05 32  7.3 N 116 23.9 W  7.0   77 km (48 mi) SE   of San Ysidro, CA
13914868  3.0  2002/12/02 18:59:21 33 59.5 N 116 51.9 W 14.3    7 km ( 5 mi) N    of Banning, CA
               FELT in Big Bear, Riverside & Palm Springs areas.
13914912  2.0  2002/12/02 23:49:32 32 33.5 N 115 48.6 W  5.6   26 km (16 mi) SE   of Ocotillo, CA
13915016  2.1  2002/12/03 09:53:12 34  1.8 N 117 14.7 W 18.1    2 km ( 1 mi) SSE  of Loma Linda, CA
13915208  2.6  2002/12/03 19:14:58 33  0.3 N 116 21.7 W 12.3   24 km (15 mi) ESE  of Julian, CA
13915304  2.1  2002/12/04 07:05:09 35 13.2 N 117 38.0 W  5.6   25 km (15 mi) N    of Boron, CA
13915584  2.5  2002/12/05 04:10:43 34 49.6 N 116 23.0 W  5.5   56 km (35 mi) SSW  of Baker, CA
13915620  2.4  2002/12/05 06:00:15 33 23.6 N 118  4.3 W 15.3   24 km (15 mi) ENE  of Avalon Catalina Island, CA
13915688  2.0  2002/12/05 10:26:58 33 54.9 N 117 46.7 W 12.4    4 km ( 3 mi) NE   of Yorba Linda, CA
13915744  2.1  2002/12/05 11:50:37 33 47.5 N 116  6.6 W  5.6   13 km ( 8 mi) NE   of Indio, CA
        -------------------------------------------------------------------------------------------

December 3, 2002

Commentary

Filed under: Old Commentary — kate @ 7:20 am

A M3.0 quake occurred last night at 6:59 pm, 5 miles north of Banning. It was reported felt in the Big Bear, Banning, Riverside & Palm Springs areas.

December 2, 2002

Commentary

Filed under: Old Commentary — kate @ 7:14 am

Over the long weekend, there were three M3+ quakes. The first occurred on Thursday at 2:05 am. It was a Hector Mines aftershock, located 8 miles northwest of Ludlow, or 34 miles south-southwest of Baker. Magnitude was ML3.0.

The second one occurred yesterday morning, at 9:49 am, 8 miles northeast of Indio. Magnitude was M3.1. It was felt in Palm Desert & La Quinta.

The third one was this morning, at 5:19 am, near the southeastern end of the San Andreas fault, 3 miles southeast of Bombay Beach. Its magnitude was M3.3.

We have no “felt reports” on the Hector Mines or Bombay Beach quakes.

« Newer Posts

Powered by WordPress