SCSN Earthquake Commentary

November 24, 2004

Commentary

Filed under: Old Commentary — kate @ 7:51 am

A small quake (ML2.5) was felt just after midnight last night (12:24 am) in the Simi Valley region. The epicenter was located 7 miles northeast of Simi Valley & the focal mechanism was reverse (thrust).

Central California also experienced some action overnight, in the form of a M4.4 in the Pinnacles area, southeast of Hollister. There were two M3.0 foreshocks & a large number of aftershocks, including a ML3.7. There was also a M3.0 Parkfield aftershock.

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

November 24, 2004

The time period covered is 4 pm on Thursday, November 18, 2004 (PST)
through 4 pm on Wednesday,
November 24, 2004 (PST). During this period

we dectected and analyzed 130 earthquakes. Click
here to see a map.

Note: This weekly report is one day early, due to the Thanksgiving Holiday

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.


#EVID     MAG  YYYY/MM/DD HH:mm:SS LAT       LON        DEP     LOCATION
10061509  2.0  2004/11/18 21:54:18 35 15.5 N 118 35.2 W  5.6   19 km (12 mi) NW   of Tehachapi, CA
10061561  2.3  2004/11/19 01:04:32 33  1.9 N 115 33.6 W 15.5    6 km ( 4 mi) E    of Westmorland, CA
10061761  2.1  2004/11/19 12:06:13 34 30.3 N 118 43.2 W 21.6   10 km ( 6 mi) WSW  of Castaic Lake dam, CA
10061765  2.3  2004/11/19 12:07:41 32 19.3 N 115 13.0 W  6.0   47 km (29 mi) SE   of Calexico, CA
10061773  2.3  2004/11/19 12:24:54 34 14.9 N 117 29.3 W 11.3    9 km ( 5 mi) WNW  of Devore, CA
10061901  2.1  2004/11/20 07:59:11 32 25.2 N 115 26.9 W  6.0   28 km (17 mi) S    of Calexico, CA
10061925  2.3  2004/11/20 09:10:17 34  9.1 N 117 27.5 W  3.8    5 km ( 3 mi) NNW  of Fontana, CA
Felt in Fontana
10061989  2.9  2004/11/20 14:32:28 34 14.6 N 119 36.4 W  1.0   19 km (12 mi) SSW  of Carpinteria, CA
10062205  3.0  2004/11/21 21:39:06 33 51.3 N 117 46.7 W  9.3    5 km ( 3 mi) SE   of Yorba Linda, CA
Felt widely throughout Orange County. Felt as far away as Los Angeles and Riverside Counties.
If you felt this quake, and would like to report it, or to view the "Did You Feel It?" CIIM map, click here.
10062253  2.0  2004/11/22 06:30:06 35 15.9 N 118 33.4 W  8.4   18 km (11 mi) NNW  of Tehachapi, CA
10062405  2.6  2004/11/23 01:18:52 32 13.4 N 115  4.0 W  7.0   64 km (40 mi) SE   of Calexico, CA
10062437  2.4  2004/11/23 06:38:22 35  2.2 N 116 54.5 W  4.1   19 km (12 mi) NNE  of Barstow, CA
10062561  2.4  2004/11/23 16:20:05 34 21.5 N 118 39.9 W 14.3   10 km ( 6 mi) NNE  of Simi Valley, CA
Felt in Simi Valley and surrounding area.
If you felt this quake, and would like to report it, or to view the "Did You Feel It?" CIIM map, click here.
10062613  2.5  2004/11/24 00:24:42 34 21.4 N 118 40.2 W 15.3    9 km ( 6 mi) NNE  of Simi Valley, CA
Felt in Simi Valley and surrounding area.
If you felt this quake, and would like to report it, or to view the "Did You Feel It?" CIIM map, click here.
10062665  2.1  2004/11/24 06:31:11 35 23.1 N 118 37.8 W  5.6   27 km (17 mi) NE   of Arvin, CA  

# Number of events: 15

### Number of rows returned:26 

If you felt any earthquake, and would like to report it, click here.


Please email questions and comments to Anthony Guarino at:
AGuarino@gps.caltech.edu


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November 22, 2004

Commentary

Filed under: Old Commentary — kate @ 8:45 am

There were a couple of feelable quakes in southern California this weekend. On Saturday afternoon, at 2:32 pm, there was a ML2.9 located offshore, 13 miles south-southwest of Carpinteria.

Also, at 9:39 pm last night, there was a ML3.0 located 2 miles south-southeast of Yorba Linda, near the Santa Ana Canyon. This quake was felt in Yorba Linda, Anaheim, Diamond Bar, Orange, Chino Hills, etc.

November 18, 2004

Commentary

Filed under: Weekly — kate @ 12:00 am



Southern California Earthquakes in the Past Week

Joseph Franck ,

Seismological Laboratory
Lucy Jones,

U. S. Geological Survey
California Institute of Technology

November 18, 2004

The time period covered is 4 pm on Thursday, November 11 (PST)
through 4 pm on Thursday, November 18 (PST). During this period
we detected and analysed 188 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
-------------------------------------------------------------------------------------------
10059401  2.9  2004/11/12 02:04:59 34 43.4 N 116  3.3 W  2.5   60 km (37 mi) S    of Baker, CA
10059617  2.6  2004/11/12 17:11:40 34 14.8 N 117 32.2 W 10.7   11 km ( 7 mi) ESE  of Mt. Baldy, CA
          Felt in epicentral area.
10059697  2.7  2004/11/13 04:53:56 35 15.2 N 118 33.9 W  8.0   17 km (11 mi) NW   of Tehachapi, CA
          Felt in epicentral area.
10059745  4.2  2004/11/13 09:39:16 34 21.2 N 116 50.7 W  9.6   10 km ( 6 mi) N    of Big Bear City, CA
          Felt reports came from as far away as Barstow and Newberry Springs on
          the north and the Corona area on the south.
10059765  2.1  2004/11/13 10:16:35 34 21.3 N 116 50.5 W  9.7   10 km ( 6 mi) N    of Big Bear City, CA
10059825  2.0  2004/11/13 19:37:15 34  2.1 N 117 15.2 W 18.7    1 km ( 1 mi) S    of Loma Linda, CA
10059849  2.0  2004/11/13 22:13:05 33  0.1 N 117 46.5 W  6.0   43 km (26 mi) WSW  of Oceanside, CA
10059853  2.3  2004/11/13 22:24:29 34  7.3 N 117 26.9 W  4.0    2 km ( 1 mi) NW   of Fontana, CA
          Felt in the Inland Empire from about Chino to Redlands.
10059901  3.0  2004/11/14 07:33:45 34 10.2 N 117 26.7 W  9.7    7 km ( 4 mi) SW   of Devore, CA
10059973  2.1  2004/11/14 13:06:52 34  2.7 N 117 15.7 W 12.7    1 km ( 1 mi) WSW  of Loma Linda, CA
10059989  2.5  2004/11/14 13:23:48 32  6.7 N 115 51.3 W  7.0   70 km (44 mi) S    of Ocotillo, CA
10060457  2.0  2004/11/15 18:21:09 36 12.5 N 117 59.7 W  5.6    8 km ( 5 mi) S    of Olancha, CA
10060461  2.2  2004/11/15 19:28:49 32  4.9 N 116  5.9 W  7.0   73 km (46 mi) S    of Ocotillo, CA
10060505  2.1  2004/11/16 00:11:07 35 23.5 N 118 37.2 W  5.7   28 km (17 mi) NE   of Arvin, CA
10061037  2.0  2004/11/17 06:49:40 33  9.9 N 115 39.3 W  0.0    2 km ( 1 mi) WSW  of Obsidian Butte, CA
-------------------------------------------------------------------------------------------


November 15, 2004

Commentary

Filed under: Old Commentary — kate @ 8:15 am

Another small quake was felt at 7:33 am on Sunday, a ML3.0 located 5 miles north of Fontana. It was reported felt in the Inland Empire from about Chino to Redlands. Peak intensity reported was IV.

November 13, 2004

Commentary

Filed under: Old Commentary — kate @ 6:24 pm

So far we have a little over 200 felt reports on this morning’s Big Bear quake, which was actually located near the Cushenbury mine on the northern front of the San Bernardino mountains. The felt reports came from as far away as Barstow & Newberry Springs on the north & the Corona area on the south.

Also of possible interest is a ML2.7 quake at 4:54 am this morning, about 11 miles northwest of Tehachapi.

Also, at 5:11 pm last night, there was a ML2.6 quake about 9 miles southeast of Wrightwood. We have a couple of reports of people feeling each of these two small quakes.

Commentary

Filed under: Old Commentary — kate @ 9:53 am

At 9:39 am, there was a Ml4.2 event located 6 mi north of Big Bear City. We have had some “felt reports” from Barstow down to Palm Springs.

November 12, 2004

Commentary

Filed under: Old Commentary — kate @ 7:37 am

Yesterday’s Ludlow quake had a ML2.9 aftershock at 2:05 am this morning. The location was the same, 6 miles east of Ludlow. The aftershock was not felt.

November 11, 2004

Commentary

Filed under: Old Commentary — kate @ 7:12 am

Early this morning (2:50 am), there was a ML3.7 quake in the desert 6 miles east of Ludlow. The focal mechanism is strike-slip, on an almost north-south (or east-west, your choice) plane. We have no felt reports. There were 2 foreshocks & 6 aftershocks (so far), all magnitude M2.3 or smaller. Note that there was a ML3.2 quake at this same location on Novermber 1.

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

November 11, 2004

The time period covered is 5 pm on Thursday, November 4 (PST)
through 4 pm on Thursday, November 11 (PST). During this period
we detected and analysed 172 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
-------------------------------------------------------------------------------------------
10058049  2.0  2004/11/04 18:12:44 34 43.1 N 116  3.0 W  2.2   61 km (38 mi) S    of Baker, CA
10058069  2.6  2004/11/04 20:22:19 34 50.6 N 116 19.5 W  5.4   52 km (32 mi) SSW  of Baker, CA
12177087  2.2  2004/11/07 12:44:47 33  9.7 N 115 38.3 W  4.5    1 km ( 1 mi) S    of Obsidian Butte, CA
10058541  2.2  2004/11/07 12:45:31 33  9.9 N 115 38.0 W  3.5    1 km ( 0 mi) SSE  of Obsidian Butte, CA
10058573  2.6  2004/11/07 14:51:42 34 37.5 N 116 17.5 W  3.9   54 km (34 mi) N    of Joshua Tree, CA
10058633  2.0  2004/11/07 20:03:03 36  2.6 N 117 43.3 W  1.5   20 km (13 mi) E    of Coso Junction, CA
10058805  2.7  2004/11/08 13:56:51 34  2.9 N 117 15.4 W 12.1   Under                 Loma Linda, CA
               Felt this afternoon in the Riverside, San Bernardino, Redlands, Colton areas.
10058865  2.2  2004/11/08 21:15:50 33 53.7 N 118  4.9 W 17.7    1 km ( 0 mi) S    of Norwalk, CA
               Felt in Lakewood, Downey, Bellflower, etc.
10058877  3.7  2004/11/08 22:44:04 35  2.0 N 116 54.7 W  4.8   19 km (12 mi) NNE  of Barstow, CA
               Felt in Barstow, Fort Irwin, Newberry Springs & Yermo.
10059005  2.1  2004/11/09 15:31:31 34 40.2 N 117 42.7 W  6.2   36 km (22 mi) NNW  of Wrightwood, CA
10059241  2.4  2004/11/11 02:33:39 34 43.3 N 116  3.1 W  2.3   61 km (38 mi) S    of Baker, CA
10059245  3.7  2004/11/11 02:50:48 34 43.4 N 116  3.0 W  2.2   60 km (37 mi) S    of Baker, CA
10059269  2.1  2004/11/11 03:50:41 34 43.2 N 116  2.8 W  2.8   61 km (38 mi) S    of Baker, CA
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