SCSN Earthquake Commentary

March 30, 2007

M4.0 Earthquake – 6 km (10 miles) east of Coso Junction, CA

Filed under: Felt Earthquakes, Significant Events — Anthony Guarino @ 1:23 am

There was a M4.0 earthquake at 2:09AM this morning, located 6 km (10 miles) east of Coso Junction, CA. The quake was felt in Trona, Coso Junction, and the Owens Valley. This earthquake was preceded by more than 20 foreshocks, and more than 30 aftershocks, all within a five minute period. This swarm may continue, as earthquake swarms in the Coso area are very common. To view a ShakeMap of shaking intensity, click here: http://earthquake.usgs.gov/eqcenter/shakemap/sc/shake/14282008/intensity.html. If you felt this quake, and would like to report it, click here: http://pasadena.wr.usgs.gov/shake/STORE/X14282008/ciim_display.html

March 29, 2007

Weekly Seismicity Report – March 29, 2007

Filed under: Weekly — Anthony Guarino @ 5:19 pm




Southern California Earthquakes in the Past Week

Anthony Guarino
Seismological Laboratory


Sue Hough U. S. Geological Survey

California Institute of Technology

March 29, 2007

This report covers the seven day period ending 17:00 on March 29, 2007. During this period we analyzed
and detected 187 earthquakes.
The table below lists the quakes during the past week that were M2.0 or larger in the coverage area.

          Mag. PST Date   Pn
----------------------------------------------------------------------------------------

10237201  2.0  2007/03/22 23:11:33 32 24.0 N 115 18.5 W  6.7   35 km (21 mi) SSE  of Calexico, CA
10237229  2.2  2007/03/23 04:35:23 32 31.7 N 115 15.2 W  6.0   27 km (17 mi) SE   of Calexico, CA
10237285  2.6  2007/03/23 11:59:29 34 53.1 N 116 40.9 W 11.8   31 km (19 mi) E    of Barstow, CA
10237301  2.1  2007/03/23 13:49:08 34  1.6 N 116 52.6 W 13.7    9 km ( 6 mi) SSW  of Mt. San Gorgonio, CA
10237313  2.1  2007/03/23 16:02:12 33 20.8 N 116 12.3 W  5.7   19 km (12 mi) ENE  of Borrego Springs, CA
10237369  2.5  2007/03/24 04:37:20 32 23.7 N 115  6.1 W  6.0   48 km (30 mi) SE   of Calexico, CA
10237397  2.6  2007/03/24 08:30:36 35 56.7 N 117 20.6 W  2.5   20 km (12 mi) N    of Trona, CA
10237405  2.2  2007/03/24 09:04:18 35 56.6 N 117 20.5 W  2.3   20 km (12 mi) N    of Trona, CA
10237421  2.7  2007/03/24 10:42:25 32 24.9 N 115  8.3 W  7.1   44 km (27 mi) SE   of Calexico, CA
10237477  2.5  2007/03/24 16:40:10 32 25.4 N 115  6.9 W  6.9   45 km (28 mi) SE   of Calexico, CA
10237485  2.1  2007/03/24 17:28:28 32 29.1 N 115 14.8 W  6.0   31 km (19 mi) SE   of Calexico, CA
10237505  2.7  2007/03/24 19:03:32 32 25.0 N 115  8.0 W  7.0   44 km (27 mi) SE   of Calexico, CA
10237509  2.8  2007/03/24 20:34:34 33 53.0 N 119 22.2 W  6.0   21 km (13 mi) SE   of Santa Cruz Is.
10237513  2.9  2007/03/24 20:57:32 32 23.4 N 115  7.2 W  6.0   47 km (29 mi) SE   of Calexico, CA
10237537  2.0  2007/03/24 22:31:34 34 15.7 N 116 26.3 W  0.4   16 km (10 mi) N    of Yucca Valley, CA
10237577  2.4  2007/03/25 04:32:55 32 25.9 N 115  7.4 W  8.5   44 km (27 mi) SE   of Calexico, CA
10237593  2.8  2007/03/25 05:31:52 36  0.3 N 117 48.5 W  1.1   13 km ( 8 mi) ESE  of Coso Junction, CA
10237637  2.9  2007/03/25 06:55:40 33  0.7 N 119 20.9 W  7.0   29 km (18 mi) SSE  of San Nicolas Is., CA
10237673  3.6  2007/03/25 10:51:41 32 24.1 N 115  8.9 W 15.0   44 km (27 mi) SE   of Calexico, CA
Felt in Calexico and surrounding area
10237677  2.2  2007/03/25 11:05:45 32 14.1 N 115  8.8 W  7.0   58 km (36 mi) SE   of Calexico, CA
10237813  2.2  2007/03/26 11:33:32 34 34.1 N 117 54.6 W  8.0   18 km (11 mi) E    of Palmdale, CA
10237893  2.7  2007/03/26 18:22:20 32  8.0 N 115 53.2 W  7.5   68 km (42 mi) S    of Ocotillo, CA
10237925  2.2  2007/03/27 01:23:46 34 30.7 N 120 47.1 W  6.6   15 km ( 9 mi) WSW  of Pt. Arguello, CA
10237937  3.1  2007/03/27 03:40:45 35 49.7 N 117 42.1 W  8.6   23 km (14 mi) N    of Ridgecrest, CA
Felt in Ridgecrest and surrounding area
10237941  2.6  2007/03/27 03:46:07 35 49.8 N 117 41.9 W  8.9   23 km (15 mi) N    of Ridgecrest, CA
10237961  2.2  2007/03/27 04:12:35 34 42.2 N 118 30.4 W 12.3   12 km ( 7 mi) WNW  of Elizabeth Lake, CA
10237985  2.9  2007/03/27 09:12:49 35  4.5 N 118 18.6 W  2.9   13 km ( 8 mi) WNW  of Mojave, CA
10238013  3.0  2007/03/27 14:15:38 34 46.5 N 117 13.5 W  4.9   22 km (14 mi) SW   of Barstow, CA
Felt in Barstow
10238021  2.5  2007/03/27 15:40:04 35 18.7 N 118 34.6 W  2.2   23 km (15 mi) NNW  of Tehachapi, CA
10238069  2.0  2007/03/27 22:55:20 33 29.8 N 116 34.6 W  9.3   11 km ( 7 mi) SE   of Anza, CA
14281736  2.1  2007/03/28 13:19:11 32 44.3 N 115 31.6 W 16.4    7 km ( 4 mi) SSE  of El Centro, CA
14281768  2.6  2007/03/28 16:50:22 32  4.8 N 117  9.7 W  3.4   54 km (33 mi) SSW  of San Ysidro, CA
14281792  2.2  2007/03/28 22:16:20 32 20.2 N 115 17.7 W  4.1   41 km (26 mi) SSE  of Calexico, CA
14281844  2.1  2007/03/29 02:28:34 32 36.6 N 115 44.4 W  4.9   24 km (15 mi) WSW  of Calexico, CA
10084450  2.1  2007/03/29 02:28:39 32 35.1 N 115 43.8 W  9.8   24 km (15 mi) WSW  of Calexico, CA
14281848  2.4  2007/03/29 02:30:49 32 35.3 N 115 44.1 W  4.1   24 km (15 mi) WSW  of Calexico, CA
14281876  2.5  2007/03/29 09:43:33 34 18.3 N 116 50.7 W  6.8    4 km ( 3 mi) N    of Big Bear City, CA  

%

March 23, 2007

Sonic Boom in San Diego area

Filed under: Significant Events — Anthony Guarino @ 12:03 pm

There were a series of small sonic booms in San Diego County about twenty minutes past noon today. A few people reported to a San Diego radio station that they had felt shaking. We have confirmed there was not any seismic activity in the San Diego area between 12:17 and 12:23 PM today, the reported time when people felt/heard something.

March 22, 2007

Weekly Seismicity Report – March 22, 2007

Filed under: Weekly — Anthony Guarino @ 4:05 pm




Southern California Earthquakes in the Past Week

Anthony Guarino
Seismological Laboratory


Sue HoughU. S. Geological Survey

California Institute of Technology

March 22, 2007

This report covers the seven day period ending 17:00 on March 22, 2007. During this period we detected and analyzed 201 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 shown are GMT.

          Mag. PST Date   PST Time  Lat.   n
-------------------------------------------------------------------------------------------


#YYY/MM/DD HH:mm:SS.ss ET MAG  M    LAT     LON     DEPTH Q  EVID      NPH NGRM
2007/03/16 10:54:31.68 le 2.37 l    34.431 -119.159  17.5 A 10236033   43  707
2007/03/16 10:56:55.90 le 2.36 l    34.429 -119.147  16.1 A 10236037   45  650
2007/03/17 01:03:55.07 le 2.12 l    35.279 -119.900   1.0 A 10236157   56  433
2007/03/17 03:02:27.44 le 2.65 l    34.182 -117.740   7.3 A 10236185  202 1478
2007/03/17 05:41:07.47 le 2.34 l    36.691 -118.852  12.0 C 10236209   19   61
2007/03/17 17:52:47.87 le 2.26 l    34.176 -116.820   4.4 A 10236257  106  999
2007/03/18 08:32:20.81 le 2.21 l    32.244 -115.886   6.9 C 10236357   11  326
2007/03/19 02:42:32.15 le 2.36 l    32.123 -115.812   1.9 C 10236465   23  308
2007/03/19 21:39:26.74 le 2.62 l    36.031 -117.528   3.1 A 10236573   37  675
2007/03/20 11:42:21.96 le 2.10 l    34.039 -116.323   8.6 A 10236673   60  803
2007/03/20 15:25:54.31 le 2.29 l    33.220 -116.014   3.4 A 10236701   38  950
2007/03/21 13:51:46.47 le 2.46 l    33.421 -116.391  14.8 A 10236925  100  990
2007/03/22 03:50:06.91 le 2.41 l    32.231 -115.868   6.6 C 10237017   18  317
2007/03/22 07:52:49.96 le 2.05 l    33.907 -117.073  18.1 A 10237045   56  657

March 15, 2007

Weekly Seismicity Report – March 15, 2006

Filed under: Weekly — Anthony Guarino @ 3:09 pm




Southern California Earthquakes in the Past Week

Anthony Guarino
Seismological Laboratory


Sue Hough U. S. Geological Survey

California Institute of Technology

March 15, 2007

This report covers the seven day period ending 16:00 on March 15, 2007. During this period we detected and analyzed 162 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
-------------------------------------------------------------------------------------------


——————————————————————————————-

10234925  2.4  2007/03/09 07:42:16 36  5.6 N 117 51.6 W  0.7   10 km ( 6 mi) NE   of Coso Junction, CA
10234961  2.3  2007/03/09 12:16:04 32 57.8 N 115 34.0 W 13.4    3 km ( 2 mi) W    of Brawley, CA
10235077  2.2  2007/03/10 11:37:21 32 20.2 N 115 14.0 W  7.0   44 km (28 mi) SSE  of Calexico, CA
10235081  2.3  2007/03/10 12:20:47 34 34.1 N 116 26.4 W  5.6   48 km (30 mi) ENE  of Lucerne Valley, CA
10235249  2.5  2007/03/11 13:44:29 32 59.2 N 116 18.8 W  4.9   24 km (15 mi) SW   of Ocotillo Wells, CA
10235297  2.9  2007/03/12 00:06:38 33 39.2 N 119  6.1 W  5.6   20 km (13 mi) N    of Santa Barbara Is., CA
10235945  2.7  2007/03/12 14:03:20 32 45.3 N 118  6.4 W  7.0   23 km (15 mi) ESE  of San Clemente Is.
10235501  2.6  2007/03/13 07:28:50 32  0.1 N 116 14.7 W  6.0   85 km (53 mi) SSW  of Ocotillo, CA
12281855  2.2  2007/03/13 09:43:42 35  7.3 N 118 43.7 W  3.1   13 km ( 8 mi) SE   of Arvin, CA
10235753  2.4  2007/03/14 16:11:10 32 15.1 N 117 42.2 W  6.0   70 km (44 mi) WSW  of San Ysidro, CA
10235929  2.4  2007/03/15 13:14:51 35  9.6 N 117 21.5 W  4.3   32 km (20 mi) NE   of Boron, CA
10235953  2.8  2007/03/15 16:03:31 32  2.9 N 115 49.7 W  1.2   76 km (47 mi) SSW  of Calexico, CA  

%

March 8, 2007

Weekly Seismicity Report – March 8, 2007

Filed under: Weekly — Anthony Guarino @ 4:30 pm




Southern California Earthquakes in the Past Week

Anthony Guarino
Seismological Laboratory


Sue Hough U. S. Geological Survey

California Institute of Technology

March 08, 2007

This report covers the seven day period ending 16:00 on March 08, 2007. During this period we detected and analyzed 165 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
-------------------------------------------------------------------------------------------


14277496 2.9 2007/03/01 20:27:06 33 29.3 N 116 26.8 W 6.0 22 km (14 mi) ESE of Anza, CA
Felt in Anza
14277520 2.1 2007/03/01 21:00:57 35 20.1 N 118 28.8 W 5.8 23 km (14 mi) N of Tehachapi, CA
14277544 2.8 2007/03/02 04:10:48 33 13.4 N 116 1.1 W 5.5 8 km ( 5 mi) SW of Salton City, CA
14277644 2.0 2007/03/02 23:15:18 36 10.0 N 117 56.4 W 5.6 14 km ( 8 mi) N of Coso Junction, CA
14277684 2.1 2007/03/03 06:24:23 33 13.2 N 116 22.0 W 12.3 4 km ( 2 mi) S of Borrego Springs, CA
14277736 2.2 2007/03/03 20:53:32 33 23.6 N 116 26.5 W 15.2 17 km (10 mi) NNW of Borrego Springs, CA
14277768 2.4 2007/03/04 05:06:51 32 18.2 N 115 18.4 W 6.0 44 km (28 mi) SSE of Calexico, CA
14277800 2.0 2007/03/04 08:42:05 36 7.5 N 117 59.5 W 5.0 10 km ( 6 mi) NNW of Coso Junction, CA
14277876 2.3 2007/03/04 23:44:25 34 2.2 N 117 31.7 W 2.4 10 km ( 6 mi) SE of Rancho Cucamonga, CA
14277888 2.1 2007/03/05 02:42:06 33 13.5 N 116 1.9 W 4.3 9 km ( 5 mi) SW of Salton City, CA
14278076 3.0 2007/03/05 19:33:29 32 4.3 N 117 25.4 W 6.0 64 km (40 mi) SW of San Ysidro, CA
10234677 2.7 2007/03/07 09:57:45 34 2.8 N 116 59.9 W 14.9 4 km ( 2 mi) ENE of Yucaipa, CA
10234813 2.7 2007/03/08 11:25:04 35 32.6 N 118 45.3 W 5.2 28 km (17 mi) WSW of town of Lake Isabella, CA
10234821 2.1 2007/03/08 13:25:51 34 18.5 N 117 42.2 W 4.0 5 km ( 3 mi) WNW of Mt. Baldy, CA

March 1, 2007

Weekly Seismicity Report – March 1, 2007

Filed under: Weekly — Anthony Guarino @ 4:03 pm




Southern California Earthquakes in the Past Week

Anthony Guarino
Seismological Laboratory


Sue HoughU. S. Geological Survey

California Institute of Technology

March 1, 2007

This report covers the seven day period ending 16:00 on March 1, 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
-------------------------------------------------------------------------------------------

10232981  2.2  2007/02/22 23:54:29 33 20.8 N 116 22.3 W 13.3   10 km ( 6 mi) N    of Borrego Springs, CA
10232985  2.7  2007/02/23 03:35:52 32 13.4 N 115 51.2 W  6.0   58 km (36 mi) SSE  of Ocotillo, CA
10232989  2.3  2007/02/23 03:37:07 32 55.3 N 117 58.5 W  6.0   36 km (23 mi) ENE  of San Clemente Is.
10232993  2.4  2007/02/23 04:18:32 32  7.0 N 116 25.5 W  6.0   76 km (47 mi) SE   of San Ysidro, CA
10233049  2.7  2007/02/23 16:26:26 34 59.6 N 116 57.0 W  5.0   13 km ( 8 mi) NNE  of Barstow, CA
10233069  2.1  2007/02/24 01:59:03 33 25.9 N 116 26.8 W 12.5   21 km (13 mi) NNW  of Borrego Springs, CA
10233089  2.1  2007/02/24 07:10:49 32 35.7 N 115 44.1 W  5.1   24 km (15 mi) WSW  of Calexico, CA
10233137  2.4  2007/02/24 14:58:20 34 41.3 N 116 18.4 W  3.4   61 km (38 mi) N    of Joshua Tree, CA
10233165  2.6  2007/02/24 17:13:37 33 28.5 N 116 28.3 W 13.9   21 km (13 mi) ESE  of Anza, CA
10233177  2.3  2007/02/24 20:54:21 33 40.8 N 118 15.8 W  8.2    4 km ( 2 mi) SE   of Pt. Fermin San Pedro, CA
10233213  3.1  2007/02/25 03:59:41 32 39.0 N 116  0.7 W  0.9   10 km ( 6 mi) S    of Ocotillo, CA
Felt in Ocotillo
10233237  2.3  2007/02/25 09:00:44 32 40.7 N 116  6.0 W 10.7   12 km ( 7 mi) WSW  of Ocotillo, CA
10233265  2.6  2007/02/25 15:05:51 32 13.8 N 115 51.2 W  6.0   58 km (36 mi) SSE  of Ocotillo, CA
10233269  2.5  2007/02/25 15:14:44 34 52.0 N 119 14.4 W 14.2   27 km (17 mi) W    of Frazier Park, CA
10233289  2.3  2007/02/25 21:09:03 32 11.5 N 115 52.4 W  5.8   62 km (38 mi) S    of Ocotillo, CA
10233349  2.7  2007/02/26 10:18:20 32 39.1 N 116  0.5 W  1.7    9 km ( 6 mi) S    of Ocotillo, CA
14277172  2.1  2007/02/27 18:29:13 35  1.2 N 119  7.5 W 12.7   17 km (10 mi) W    of Wheeler Ridge, CA
14277180  2.1  2007/02/27 22:23:08 35  1.8 N 116 58.1 W  5.0   16 km (10 mi) NNE  of Barstow, CA
14277196  2.2  2007/02/28 03:20:57 32 58.0 N 115 54.0 W  4.0   27 km (17 mi) NNE  of Ocotillo, CA
14277224  2.4  2007/02/28 08:07:38 36  9.2 N 118  3.9 W  0.4   15 km ( 9 mi) SSW  of Olancha, CA
14277260  2.1  2007/02/28 13:51:57 33 28.1 N 116 29.7 W 13.6   19 km (12 mi) ESE  of Anza, CA
12277879  2.4  2007/02/28 13:52:45 33 27.9 N 116 30.3 W 12.8   18 km (11 mi) ESE  of Anza, CA
14277372  2.2  2007/03/01 04:27:43 35 23.8 N 117 49.9 W  4.5   29 km (18 mi) SSW  of Ridgecrest, CA
14277376  3.4  2007/03/01 06:37:44 33 13.3 N 116  1.0 W  2.5    8 km ( 5 mi) SW   of Salton City, CA
Felt in Salton City and surrounding area
14277408  2.1  2007/03/01 11:38:55 35 19.2 N 117 39.8 W  4.1   34 km (21 mi) S    of Ridgecrest, CA
14277416  3.0  2007/03/01 11:56:21 34 54.5 N 119 24.6 W 12.0   26 km (16 mi) S    of Taft, CA
Felt in Taft and surrounding area

%

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