SCSN Earthquake Commentary

January 28, 2005

Commentary

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

A ML2.9 quake was felt yesterday afternoon at 2:48 pm, in the northern Orange County areas: Yorba Linda, Fullerton, Orange, Anaheim, Santa Ana, etc. as well as Whittier, La Habra, Chino & Ontario. The epicenter was located 3 miles southeast of La Habra.

Early this morning, there was a ML4.0 quake near Coalinga. This is in the area covered by Northern California, but we mention it because of its size. The time was 5:03 am & the quake was located 5 miles east-northeast of Avenal or 9 miles east-southeast of Coalinga.

January 27, 2005

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

January 27, 2005

The time period covered is 4 pm on Thursday, January 20 (PST) through 4
pm on Thursday, January 27 (PST). During this period we detected and
analyzed 213 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
-------------------------------------------------------------------------------------------
14120096  2.6  2005/01/20 07:46:03 32 46.1 N 115 32.2 W 16.5    3 km ( 2 mi) SSE  of El Centro, CA
14120100  2.0  2005/01/20 07:47:16 32 44.7 N 115 29.4 W 25.9    8 km ( 5 mi) SE   of El Centro, CA
14120108  2.5  2005/01/20 07:49:30 32 46.3 N 115 32.1 W 17.1    3 km ( 2 mi) SSE  of El Centro, CA
14120164  2.6  2005/01/20 11:48:40 33 59.7 N 116 57.2 W  8.9    8 km ( 5 mi) NNE  of Beaumont, CA
14120508  2.5  2005/01/21 20:29:45 34 25.3 N 120  0.1 W  5.7   14 km ( 9 mi) W    of Isla Vista, CA
14120628  2.2  2005/01/22 15:53:10 34  5.1 N 116 58.8 W  3.7    8 km ( 5 mi) NE   of Yucaipa, CA
14120792  2.2  2005/01/23 16:40:35 32 54.5 N 115 31.3 W 15.4    6 km ( 4 mi) SSE  of Brawley, CA
14120816  2.1  2005/01/23 21:16:49 35 24.3 N 118 39.1 W  5.6   27 km (17 mi) NE   of Arvin, CA
14121032  2.3  2005/01/24 17:04:33 36 11.5 N 117 53.2 W  5.6   15 km ( 9 mi) SE   of Olancha, CA
14121148  2.1  2005/01/25 07:01:28 33 20.8 N 116 21.3 W 14.9   10 km ( 6 mi) N    of Borrego Springs, CA
14121236  2.7  2005/01/25 11:22:53 32 33.9 N 115 42.4 W  5.0   23 km (14 mi) WSW  of Calexico, CA
14121364  2.4  2005/01/25 17:54:28 32  9.7 N 115 51.6 W  7.1   65 km (40 mi) S    of Ocotillo, CA
14121368  2.6  2005/01/25 18:00:51 32 54.3 N 116 14.0 W  6.6   28 km (18 mi) SSW  of Ocotillo Wells, CA
14121608  2.0  2005/01/26 22:04:07 35 59.8 N 117 40.4 W  2.8   25 km (16 mi) ESE  of Coso Junction, CA
14121612  2.1  2005/01/26 22:04:38 35 59.6 N 117 40.4 W  2.7   25 km (16 mi) ESE  of Coso Junction, CA
14121756  2.0  2005/01/27 07:40:40 33 10.4 N 115 37.7 W  2.2    1 km ( 0 mi) ENE  of Obsidian Butte, CA
14121768  2.1  2005/01/27 08:00:36 33 29.0 N 116 23.9 W  9.9   25 km (16 mi) N    of Borrego Springs, CA
14121780  2.5  2005/01/27 09:55:12 35 47.8 N 118 30.0 W  3.0   18 km (11 mi) N    of town of Lake Isabella, CA
14121864  2.8  2005/01/27 13:25:58 32 34.5 N 115 43.1 W  3.5   23 km (15 mi) WSW  of Calexico, CA
14121900  2.9  2005/01/27 14:48:19 33 51.7 N 117 44.5 W  9.6    7 km ( 4 mi) ESE  of Yorba Linda, CA
	       Felt in the northern Orange County areas: Yorba Linda, Fullerton, Orange,
	       Anaheim, Santa Ana, etc. as well as Whittier, La Habra, Chino & Ontario.
-------------------------------------------------------------------------------------------


January 20, 2005

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

January 20, 2005

The time period covered is 4 pm on Thursday, January 13 (PST)
through 4 pm on Thursday, January 20 (PST). During this period we
detected and analyzed 168 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
-------------------------------------------------------------------------------------------
14118996  2.0  2005/01/16 01:06:35 35 23.4 N 118 37.7 W  5.6   27 km (17 mi) NE   of Arvin, CA
14119012  2.6  2005/01/16 03:40:20 36 11.8 N 117 53.0 W  2.1   14 km ( 9 mi) SE   of Olancha, CA
14119480  2.3  2005/01/17 21:31:06 34 20.4 N 116 55.1 W  6.1   10 km ( 6 mi) NW   of Big Bear City, CA
14119756  2.0  2005/01/18 17:29:43 32 31.6 N 116 48.3 W  9.4   22 km (13 mi) ESE  of Chula Vista, CA
14119804  2.3  2005/01/19 00:49:33 32 32.7 N 118  4.2 W 14.9   40 km (25 mi) SE   of San Clemente Is.
14120096  2.6  2005/01/20 07:46:03 32 46.1 N 115 32.2 W 16.5    3 km ( 2 mi) SSE  of El Centro, CA
14120108  2.5  2005/01/20 07:49:30 32 46.3 N 115 32.1 W 17.1    3 km ( 2 mi) SSE  of El Centro, CA
14120164  2.6  2005/01/20 11:48:40 33 59.7 N 116 57.2 W  8.9    8 km ( 5 mi) NNE  of Beaumont, CA
-------------------------------------------------------------------------------------------


January 13, 2005

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

January 13, 2005

The time period covered is 4 pm on Thursday, January 6, 2004 (PST)
through 4 pm on Thursday,
January 13, 2005 (PST). During this period

we dectected and analyzed 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.


#EVID     MAG  YYYY/MM/DD HH:mm:SS LAT       LON        DEP     LOCATION
14117196  2.3  2005/01/06 21:22:14 34  7.1 N 117 27.2 W  5.1    2 km ( 1 mi) NW   of Fontana, CA
Felt in Fontana
14117280  2.2  2005/01/07 05:04:34 33 50.0 N 119 20.0 W  6.0   28 km (17 mi) SE   of Santa Cruz Is.
14117308  2.2  2005/01/07 10:13:48 33  1.6 N 115 32.6 W 14.7    7 km ( 4 mi) N    of Brawley, CA
14117372  2.1  2005/01/07 16:55:42 34  4.1 N 117 16.8 W 12.6    3 km ( 2 mi) NW   of Loma Linda, CA
14117460  2.1  2005/01/08 05:00:59 33 50.5 N 117 50.6 W 11.6    6 km ( 4 mi) SSW  of Yorba Linda, CA
14117468  2.5  2005/01/08 06:32:21 34 21.4 N 116  7.9 W  3.6   25 km (16 mi) NNW  of Twentynine Palms, CA
14117484  2.3  2005/01/08 08:54:11 34 40.9 N 116 16.9 W  3.6   61 km (38 mi) N    of Joshua Tree, CA
14117512  2.2  2005/01/08 11:22:08 35 21.9 N 118  4.6 W  5.5   29 km (18 mi) NNW  of California City, CA
14117564  2.1  2005/01/08 22:09:43 35  6.8 N 118 56.4 W 22.2   12 km ( 7 mi) N    of Wheeler Ridge, CA
14117616  2.4  2005/01/09 08:10:12 33 14.9 N 116  7.3 W 10.1   12 km ( 7 mi) N    of Ocotillo Wells, CA
14117680  3.0  2005/01/09 15:52:35 32 19.5 N 115 19.1 W  7.0   42 km (26 mi) SSE  of Calexico, CA
14117856  2.4  2005/01/10 15:05:17 34 14.9 N 116 50.8 W  2.3    2 km ( 1 mi) SSE  of Big Bear City, CA
14117896  2.8  2005/01/10 18:47:34 35 13.6 N 118 34.2 W  5.1   16 km (10 mi) NW   of Tehachapi, CA
Felt in Tehachapi, Bear Valley Springs, & surrounding communities.
If you felt this earthquake, and would like to report it, click here.
14117924  2.6  2005/01/11 00:29:49 32 10.3 N 115 50.8 W  8.1   64 km (40 mi) SSE  of Ocotillo, CA
14117928  2.8  2005/01/11 00:37:05 35 13.7 N 118 34.0 W  2.6   15 km (10 mi) NW   of Tehachapi, CA
Felt in Tehachapi, Bear Valley Springs, & surrounding communities.
If you felt this earthquake, and would like to report it, click here.
14117940  2.1  2005/01/11 02:22:46 33 28.8 N 116 48.8 W 10.4   15 km ( 9 mi) NNE  of Palomar Observatory, CA
14118064  2.7  2005/01/11 17:49:33 34  0.2 N 116 56.8 W 10.4    9 km ( 5 mi) ESE  of Yucaipa, CA
Possibly felt in Yucaipa.
If you felt this earthquake, and would like to report it, click here.
14118092  2.7  2005/01/11 23:32:10 32 49.7 N 118 22.9 W  6.0    3 km ( 2 mi) WNW  of San Clemente Is.
14118096  4.3  2005/01/12 00:10:46 33 57.2 N 116 23.7 W  7.6   10 km ( 6 mi) E    of Desert Hot Springs, CA
Felt sharply in Desert Hot Springs. We received nearly 1500 felt reports from as far away as Helendale to the north, Sherman Oaks to the west, and San Diego to the south.
To view the map of felt reports, or to fill out a "felt report" form, click here.
To view the ShakeMap for this event, click here.
14118316  2.1  2005/01/12 18:50:36 36 11.5 N 117 53.4 W  0.0   14 km ( 9 mi) SE   of Olancha, CA
14118328  3.2  2005/01/13 01:07:35 32  4.2 N 114 59.6 W  6.0   78 km (48 mi) SSW  of Yuma, AZ
14118408  2.3  2005/01/13 08:05:52 33 15.2 N 116  4.6 W  2.2   11 km ( 7 mi) WSW  of Salton City, CA
14118412  2.7  2005/01/13 08:06:20 33 15.3 N 116  4.7 W  2.3   11 km ( 7 mi) WSW  of Salton City, CA
14118416  2.7  2005/01/13 08:07:20 33 15.3 N 116  4.5 W  2.5   11 km ( 7 mi) WSW  of Salton City, CA  

# Number of events: 24

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


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

January 12, 2005

Commentary

Filed under: Old Commentary — kate @ 6:57 am

Just after midnight, a light quake shook the desert. At 12:10 am, there was a ML4.3 event located 6 miles east of Desert Hot Springs. The focal mechanism shows strike-slip motion, with a strike consistent with a series of small faults to the east of the San Andreas. The quake was reported felt as far west as the Inland Empire & as far southwest as Temecula. All aftershocks so far have been less than magnitude 2.0.

There was also a ML2.7 in the Inland Empire at 5:49 pm yesterday that was felt. It occurred 6 miles north-northeast of Beaumont.

January 11, 2005

Commentary

Filed under: Old Commentary — kate @ 8:53 am

A pair of ML2.8 quakes occurred in the Tehachapi Mtns. overnight, both about 1 mile southeast of Keene, or 15 miles northwest of Tehachapi. The first was at 6:47 pm last night & the other was at 12:37 am. Both were reported felt in Tehachapi, Bear Valley Springs & surrounding communities.

January 6, 2005

Commentary

Filed under: Old Commentary — kate @ 6:39 am

We appear to be having an earthquake swarm about 2 miles northeast of Fontana. The largest ones so far have been a ML3.1 at 12:49 am on Tuesday, ML3.6 at 4:11 am, ML3.3 at 6:22, and a ML4.4 at 6:35. All of these M3+ events have been felt throughout the Inland Empire. We will post more details later in the day.

Commentary

Filed under: Old Commentary — kate @ 4:35 am

At 4:11 this morning, there was a ML3.6 event located 2 miles NNE of Fontana. This is the second light quake to wake the area in the past few nights.

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

January 6, 2005

The time period covered is 4 pm on Thursday, December 30, 2004 (PST)
through 4 pm on Thursday,
January 6, 2005 (PST). During this period

we dectected and analyzed 185 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.


#EVID     MAG  YYYY/MM/DD HH:mm:SS LAT       LON        DEP     LOCATION
10070685  2.1  2004/12/31 14:31:58 34 32.6 N 119 52.2 W  3.9   12 km ( 8 mi) NNW  of Goleta, CA
10070917  4.0  2005/01/02 12:58:48 32 20.8 N 115 13.4 W  6.0   44 km (27 mi) SE   of Calexico, CA
Felt in Calexico, El Centro, and surrounding area.
To view the ShakeMap for this event, click here.
If you felt this event, and would like to report it, or to view a map of the felt area, click here.
10070933  2.6  2005/01/02 14:43:19 33 13.5 N 120  6.2 W  6.6   56 km (35 mi) W    of San Nicolas Is., CA
10071137  2.7  2005/01/04 00:21:35 34  7.1 N 117 26.2 W  4.3    1 km ( 1 mi) N    of Fontana, CA
10071173  3.1  2005/01/04 00:49:24 34  7.0 N 117 26.5 W  4.5    1 km ( 1 mi) NNW  of Fontana, CA
Felt in Fontana, Mira Loma, Riverside, Moreno Valley, and surrounding area.
If you felt this event, and would like to report it, or to view a map of the felt area, click here.
10071381  2.7  2005/01/04 13:19:51 32 21.0 N 115 12.9 W  7.2   44 km (27 mi) SE   of Calexico, CA
14116632  2.2  2005/01/04 20:11:29 33 54.9 N 118 21.1 W 12.4    0 km ( 0 mi) SSW  of Hawthorne, CA
14116860  2.4  2005/01/05 21:32:15 33  1.8 N 115 32.5 W 14.4    7 km ( 5 mi) E    of Westmorland, CA
14116916  2.5  2005/01/06 04:11:13 34  7.3 N 117 26.4 W  2.8    2 km ( 1 mi) NNW  of Fontana, CA
14116920  3.6  2005/01/06 04:11:29 34  7.1 N 117 26.2 W  4.7    1 km ( 1 mi) N    of Fontana, CA
Felt in Fontana, Mira Loma, Riverside, Moreno Valley, and surrounding area.
To view the ShakeMap for this event, click here.
If you felt this event, and would like to report it, or to view a map of the felt area, click here.
14116932  2.5  2005/01/06 04:32:45 34  7.3 N 117 26.7 W  3.5    2 km ( 1 mi) NNW  of Fontana, CA
14116960  3.3  2005/01/06 06:22:38 34  6.8 N 117 26.1 W  4.5    1 km ( 0 mi) N    of Fontana, CA
Felt .
If you felt this event, and would like to report it, or to view a map of the felt area, click here.
14116972  4.4  2005/01/06 06:35:27 34  7.5 N 117 26.3 W  4.2    2 km ( 1 mi) N    of Fontana, CA
Felt sharply in Fontana and the epicentral area. Also felt as far north as Newberry Springs and Victorville, and as far south as San Diego County.
Felt as far west as Ventura County, and as far east as Palm Springs. Picture frames fell, some minor cracking of plaster, and car alarms triggered. Modified Mercalli Intensity V.
To view the ShakeMap for this event, click here.
If you felt this event, and would like to report it, or to view a map of the felt area, click here.
14116976  2.0  2005/01/06 06:37:01 34  6.8 N 117 26.4 W  5.0    1 km ( 0 mi) NNW  of Fontana, CA
14116988  2.2  2005/01/06 06:47:38 34  7.2 N 117 27.2 W  4.9    2 km ( 1 mi) NW   of Fontana, CA
14117040  3.4  2005/01/06 10:44:13 32  9.7 N 115 51.0 W  5.5   65 km (40 mi) SSE  of Ocotillo, CA
14117128  2.0  2005/01/06 15:10:13 36  1.3 N 117 48.5 W  1.1   13 km ( 8 mi) ESE  of Coso Junction, CA  

# Number of events: 17

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


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

January 5, 2005

Commentary

Filed under: Old Commentary — kate @ 7:57 am

Another very small quake was felt yesterday evening, at 8:11 pm. This quake had a magnitude of ML2.2 & was located under the town of Hawthorne. It has been reported felt in El Segundo, Hermosa Beach, Lawndale, Manhattan Beach & Inglewood.

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