A ML3.9 quake occurred late last night in the southern Sierras. The epicenter was locate 11 miles southwest of Olancha & the time was 11:20 pm. It was reported felt in the Little Lake, Lake Isabella & surrounding areas. There was a ML2.8 aftershock at 6:08 am this morning.
March 31, 2004
March 28, 2004
March 26, 2004
Commentary
There was a ML3.2 quake at 9:10 this morning, located in the San Jacinto fault zone 6 miles north-northeast of Ocotillo Wells. We don’t have any reports that it was felt.
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March 25, 2004
Commentary
Southern California Earthquakes in the Past Week
Nick Scheckel ,
Seismological Laboratory
Lucy Jones,
U. S. Geological Survey
California Institute of Technology
March 25, 2004
Nick Scheckel ,
Seismological Laboratory
Lucy Jones,
U. S. Geological Survey
California Institute of Technology
March 25, 2004
The time period covered is 5 pm on Thursday, March 18 (PST)
through 5 pm on Thursday, March 25 (PST). During this period
we dectected and analysed 242 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
-------------------------------------------------------------------------------------------
14039128 3.5 2004/03/18 17:09:23 34 18.5 N 116 56.0 W 10.1 8 km ( 5 mi) NNW of town of Big Bear Lake, CA
Felt in the epicentral area & as far as San Bernardino, Riverside & Victorville.
Peak intensity was Modified Mercalli IV.
14039140 2.5 2004/03/18 17:21:52 34 18.4 N 116 55.9 W 9.1 7 km ( 5 mi) NNW of town of Big Bear Lake, CA
14039184 2.6 2004/03/18 18:54:45 34 18.3 N 116 55.8 W 9.5 7 km ( 4 mi) NNW of town of Big Bear Lake, CA
14039352 2.1 2004/03/19 11:32:06 34 3.2 N 117 16.5 W 11.2 2 km ( 1 mi) WNW of Loma Linda, CA
9992729 2.1 2004/03/19 20:34:25 33 21.6 N 116 15.2 W 13.3 16 km (10 mi) NE of Borrego Springs, CA
9992737 3.1 2004/03/19 20:55:37 33 30.8 N 116 34.5 W 14.6 10 km ( 6 mi) ESE of Anza, CA
Reported felt in the epicentral area: Anza, Idyllwild, Mountain Center, Palm Desert,
La Quinta, Cathedral City, Indian Wells & Indio.
9992917 2.5 2004/03/20 12:28:50 34 48.2 N 116 16.0 W 6.5 54 km (34 mi) SSW of Baker, CA
9992949 2.3 2004/03/20 17:40:29 33 54.8 N 117 45.1 W 8.6 6 km ( 4 mi) ENE of Yorba Linda, CA
9992977 2.1 2004/03/21 00:08:20 33 57.5 N 116 48.0 W 18.2 4 km ( 3 mi) NNW of Cabazon, CA
9993013 3.1 2004/03/21 03:23:44 32 41.1 N 115 47.4 W 7.1 20 km (12 mi) ESE of Ocotillo, CA
9993033 2.0 2004/03/21 04:50:33 32 40.6 N 115 47.1 W 6.8 21 km (13 mi) ESE of Ocotillo, CA
9993153 2.4 2004/03/21 17:14:45 34 15.3 N 118 22.9 W 5.7 3 km ( 2 mi) SW of Lake View Terrace, CA
9993169 2.2 2004/03/21 17:54:45 33 42.6 N 116 46.5 W 17.6 7 km ( 4 mi) SW of Idyllwild, CA
9993197 2.2 2004/03/21 20:27:59 35 1.0 N 119 7.1 W 12.1 16 km (10 mi) W of Wheeler Ridge, CA
9993257 2.4 2004/03/22 00:58:39 32 1.1 N 115 45.2 W 7.0 76 km (47 mi) SSW of Calexico, CA
9993373 2.1 2004/03/22 13:22:08 32 12.2 N 115 44.3 W 7.0 56 km (35 mi) SSW of Calexico, CA
9993405 2.2 2004/03/22 16:22:32 36 9.7 N 117 52.8 W 4.1 14 km ( 9 mi) NNE of Coso Junction, CA
9993437 2.2 2004/03/22 17:24:09 34 47.4 N 120 28.8 W 3.5 17 km (11 mi) N of Lompoc, CA
9993449 2.8 2004/03/22 17:51:29 33 57.3 N 118 24.9 W 12.6 2 km ( 1 mi) ENE of Los Angeles Airport, CA
Felt from Santa Monica to Long Beach, and as far east as La Habra.
Peak intensity was Modified Mercalli IV.
9993465 2.2 2004/03/22 20:01:25 36 24.3 N 117 50.9 W 5.6 20 km (12 mi) NE of Olancha, CA
9993489 2.8 2004/03/22 22:21:30 33 48.4 N 116 11.0 W 8.0 11 km ( 7 mi) NNE of Indio, CA
9993517 2.1 2004/03/23 02:24:50 33 14.0 N 116 12.0 W 6.7 12 km ( 7 mi) NNW of Ocotillo Wells, CA
9993521 2.7 2004/03/23 02:34:41 34 47.6 N 120 29.6 W 5.6 18 km (11 mi) NNW of Lompoc, CA
9993617 2.1 2004/03/23 10:15:10 33 33.6 N 118 13.9 W 5.6 17 km (11 mi) SSE of Pt. Fermin San Pedro, CA
9993777 2.5 2004/03/24 07:03:33 33 52.3 N 116 50.9 W 17.0 7 km ( 4 mi) SSE of Banning, CA
9993869 2.1 2004/03/24 16:20:58 34 39.8 N 116 18.2 W 5.6 59 km (36 mi) N of Joshua Tree, CA
-------------------------------------------------------------------------------------------
Comments Off
March 22, 2004
Commentary
A M2.9 quake occurred at 5:51 pm this evening, located 1 mile NNE of Los Angeles Airport, in El Segundo. We have received “felt reports” from Santa Monica to Long Beach, and as far east as La Habra. Peak intensity was Modified Mercalli IV.
Comments Off
Commentary
Two small quakes of interest occurred over the weekend. The first was a ML3.2 at 8:55 pm on Friday, which took place 6 miles east-southest of Anza. It was reported felt in the epicentral area: Anza, Idyllwild, Mountain Center, Palm Desert, La Quinta, Cathedral City, Indian Wells & Indio.
The second quake was a ML3.1 at 3:23 am on Sunday, 13 miles east-southeast of Ocotillo, near the U.S./Mexico border. It was not reported felt.
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March 19, 2004
Commentary
Late yesterday afternoon, at 5:09 pm, the Big Bear area experienced a ML3.5 earthquake. It was felt in the epicentral area & as far as San Bernardino, Riverside & Victorville. Peak intensity was Modified Mercalli IV. The epicenter was located 5 miles north-northwest of the town of Big Bear Lake. There have been a small handful of aftershocks, including a pair of ML2.5’s that might have been felt.
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March 18, 2004
Commentary
Southern California Earthquakes in the Past Week
Nick Scheckel ,
Seismological Laboratory
Lucy Jones,
U. S. Geological Survey
California Institute of Technology
March 18, 2004
Nick Scheckel ,
Seismological Laboratory
Lucy Jones,
U. S. Geological Survey
California Institute of Technology
March 18, 2004
The time period covered is 5 pm on Thursday, March 11 (PST)
through 5 pm on Thursday, March 18 (PST). During this period
we dectected and analysed 295 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
-------------------------------------------------------------------------------------------
9990241 2.4 2004/03/11 20:56:19 33 52.9 N 117 2.5 W 18.5 8 km ( 5 mi) SW of Beaumont, CA
9990285 2.2 2004/03/12 05:51:11 32 57.2 N 115 29.9 W 15.8 3 km ( 2 mi) ESE of Brawley, CA
9990309 2.1 2004/03/12 07:26:11 36 1.0 N 117 48.5 W 3.5 13 km ( 8 mi) ESE of Coso Junction, CA
9990377 2.1 2004/03/12 10:57:54 34 2.7 N 117 15.8 W 12.5 1 km ( 1 mi) WSW of Loma Linda, CA
9990581 2.3 2004/03/13 07:38:33 34 17.9 N 116 50.0 W 4.1 4 km ( 3 mi) NNE of Big Bear City, CA
9990753 2.0 2004/03/14 01:56:28 34 2.8 N 117 16.2 W 12.6 2 km ( 1 mi) W of Loma Linda, CA
9990905 2.0 2004/03/14 15:12:55 35 56.6 N 118 45.4 W 6.2 28 km (17 mi) ESE of Porterville, CA
9990953 2.1 2004/03/14 18:40:14 33 11.5 N 115 36.4 W 3.3 4 km ( 2 mi) NE of Obsidian Butte, CA
9990977 2.1 2004/03/14 20:26:51 32 43.4 N 115 25.4 W 12.0 9 km ( 6 mi) NE of Calexico, CA
9991113 2.4 2004/03/15 11:37:38 32 45.2 N 115 25.3 W 16.2 12 km ( 7 mi) NE of Calexico, CA
9991129 2.3 2004/03/15 13:59:17 32 45.3 N 115 25.2 W 15.9 12 km ( 7 mi) NE of Calexico, CA
9991169 2.3 2004/03/15 16:05:54 33 12.3 N 115 35.1 W 2.7 6 km ( 4 mi) NE of Obsidian Butte, CA
9991181 2.3 2004/03/15 16:20:36 33 12.2 N 115 34.4 W 2.8 6 km ( 4 mi) SW of Niland, CA
12160763 2.2 2004/03/15 16:20:59 33 12.4 N 115 34.8 W 0.2 7 km ( 4 mi) WSW of Niland, CA
12160767 2.5 2004/03/15 16:21:18 33 12.4 N 115 33.7 W 0.1 5 km ( 3 mi) SW of Niland, CA
9991189 2.5 2004/03/15 16:22:17 33 12.3 N 115 34.9 W 2.2 6 km ( 4 mi) NE of Obsidian Butte, CA
9991193 2.1 2004/03/15 16:24:41 33 12.5 N 115 34.8 W 2.8 7 km ( 4 mi) WSW of Niland, CA
9991201 2.2 2004/03/15 16:28:27 33 12.2 N 115 35.4 W 2.9 6 km ( 4 mi) NE of Obsidian Butte, CA
9991197 3.5 2004/03/15 16:30:50 33 12.2 N 115 34.6 W 2.7 7 km ( 4 mi) ENE of Obsidian Butte, CA
12160731 2.2 2004/03/15 16:32:40 33 12.0 N 115 34.3 W 3.0 7 km ( 4 mi) SW of Niland, CA
12160775 2.5 2004/03/15 16:33:24 33 12.2 N 115 33.6 W 2.5 5 km ( 3 mi) SW of Niland, CA
9991213 3.6 2004/03/15 16:33:33 33 12.0 N 115 35.0 W 2.3 6 km ( 4 mi) NE of Obsidian Butte, CA
12160779 2.0 2004/03/15 16:34:30 33 9.1 N 115 43.0 W 5.5 8 km ( 5 mi) WSW of Obsidian Butte, CA
12160783 2.1 2004/03/15 16:35:05 33 11.8 N 115 34.3 W 3.2 7 km ( 4 mi) ENE of Obsidian Butte, CA
9991221 2.1 2004/03/15 16:38:19 33 12.5 N 115 34.4 W 1.3 6 km ( 4 mi) WSW of Niland, CA
9991241 2.3 2004/03/15 16:46:18 33 12.2 N 115 34.7 W 1.9 7 km ( 4 mi) NE of Obsidian Butte, CA
9991253 3.3 2004/03/15 16:56:00 33 11.9 N 115 34.1 W 1.1 6 km ( 4 mi) SW of Niland, CA
9991285 2.0 2004/03/15 17:23:40 33 11.7 N 115 34.3 W 3.5 7 km ( 4 mi) ENE of Obsidian Butte, CA
9991313 2.0 2004/03/15 17:39:02 32 44.5 N 115 25.2 W 16.2 11 km ( 7 mi) NE of Calexico, CA
9991329 2.9 2004/03/15 17:50:16 33 12.5 N 115 34.9 W 3.3 7 km ( 4 mi) NE of Obsidian Butte, CA
9991333 2.2 2004/03/15 18:02:22 33 12.3 N 115 34.5 W 0.9 7 km ( 4 mi) SW of Niland, CA
9991341 2.0 2004/03/15 18:15:57 33 12.0 N 115 35.2 W 1.3 6 km ( 4 mi) NE of Obsidian Butte, CA
9991349 2.5 2004/03/15 18:22:39 36 3.3 N 117 42.4 W 2.0 22 km (14 mi) E of Coso Junction, CA
9991365 2.1 2004/03/15 19:38:28 33 40.9 N 118 7.7 W 6.8 7 km ( 4 mi) SSW of Seal Beach, CA
9991369 2.1 2004/03/15 19:48:45 33 12.3 N 115 34.8 W 0.7 7 km ( 4 mi) NE of Obsidian Butte, CA
9991377 2.2 2004/03/15 20:38:20 32 44.6 N 115 25.1 W 16.3 11 km ( 7 mi) NE of Calexico, CA
9991393 2.4 2004/03/15 21:09:09 33 11.9 N 115 35.9 W 1.2 5 km ( 3 mi) NE of Obsidian Butte, CA
9991397 2.6 2004/03/15 21:44:32 33 12.4 N 115 34.8 W 3.2 7 km ( 4 mi) NE of Obsidian Butte, CA
9991525 2.3 2004/03/16 06:10:51 33 18.1 N 116 20.1 W 13.9 6 km ( 4 mi) NE of Borrego Springs, CA
9991649 2.4 2004/03/16 11:06:29 34 14.9 N 119 29.7 W 11.5 17 km (10 mi) S of Carpinteria, CA
9991765 2.9 2004/03/16 18:34:44 34 26.8 N 120 48.8 W 0.0 21 km (13 mi) SW of Pt. Arguello, CA
9991893 2.3 2004/03/17 05:58:03 32 45.2 N 115 25.7 W 16.2 11 km ( 7 mi) NNE of Calexico, CA
9991941 2.0 2004/03/17 09:23:01 34 29.4 N 116 20.2 W 5.6 39 km (24 mi) N of Joshua Tree, CA
9991969 2.7 2004/03/17 10:10:11 32 1.6 N 115 52.4 W 7.0 80 km (49 mi) S of Ocotillo, CA
9992065 2.5 2004/03/17 16:52:39 34 39.7 N 116 12.5 W 6.0 59 km (37 mi) N of Joshua Tree, CA
14039068 2.2 2004/03/18 13:23:28 32 11.1 N 115 20.5 W 6.0 56 km (35 mi) SSE of Calexico, CA
14039092 2.3 2004/03/18 14:08:42 34 18.6 N 116 55.8 W 9.8 8 km ( 5 mi) NNW of town of Big Bear Lake, CA
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Comments Off
March 16, 2004
Commentary
Northern Imperial Valley experienced an earthquake swarm last night, between about 4 pm & 6 pm. The largest events were a ML3.5 at 4:30 pm, a ML3.6 at 4:33 pm & a ML3.4 at 4:55 pm. The epicenters were all about 4 miles north-northeast of Obsidian Butte, at the eastern edge of the Salton Sea, in the Brawley Seismic Zone.
Small earthquakes are also occurring along the Imperial fault about 5 miles south-southwest of Holtville. The largest of these is a ML2.4 at 11:37 am yesterday.
Comments Off
March 11, 2004
Commentary
Southern California Earthquakes in the Past Week
Nick Scheckel ,
Seismological Laboratory
Lucy Jones,
U. S. Geological Survey
California Institute of Technology
March 11, 2004
Nick Scheckel ,
Seismological Laboratory
Lucy Jones,
U. S. Geological Survey
California Institute of Technology
March 11, 2004
The time period covered is 5 pm on Thursday, March 4 (PST)
through 5 pm on Thursday, March 11 (PST). During this period
we dectected and analysed 205 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
-------------------------------------------------------------------------------------------
9988185 2.3 2004/03/04 19:46:09 34 47.8 N 116 21.3 W 8.0 58 km (36 mi) SSW of Baker, CA
9988217 2.9 2004/03/04 23:23:56 32 5.3 N 115 51.9 W 7.0 73 km (45 mi) S of Ocotillo, CA
9988417 2.3 2004/03/05 18:54:45 35 19.9 N 119 20.5 W 27.6 23 km (15 mi) NNE of Taft, CA
9988749 2.5 2004/03/07 00:43:41 32 0.8 N 116 11.8 W 6.0 83 km (51 mi) SSW of Ocotillo, CA
9988793 2.4 2004/03/07 03:02:58 33 38.6 N 119 16.4 W 6.0 27 km (17 mi) NW of Santa Barbara Is., CA
9988861 2.1 2004/03/07 08:00:17 33 48.1 N 116 11.0 W 9.9 10 km ( 6 mi) NNE of Indio, CA
9988973 2.6 2004/03/07 17:30:26 36 54.9 N 117 48.4 W 7.0 37 km (23 mi) ENE of Independence, CA
9989105 2.2 2004/03/08 10:16:38 34 41.4 N 116 17.4 W 4.4 62 km (38 mi) N of Joshua Tree, CA
9989121 2.3 2004/03/08 11:18:42 34 23.2 N 116 28.4 W 3.3 30 km (19 mi) N of Yucca Valley, CA
9989305 2.1 2004/03/09 04:06:05 32 53.3 N 117 38.2 W 17.8 36 km (22 mi) W of La Jolla, CA
9989417 2.8 2004/03/09 11:50:40 32 19.4 N 115 14.4 W 7.0 45 km (28 mi) SSE of Calexico, CA
9989421 3.6 2004/03/09 11:54:46 32 21.3 N 115 14.4 W 6.0 42 km (26 mi) SE of Calexico, CA
9989469 2.0 2004/03/09 14:40:53 32 40.4 N 115 47.2 W 9.4 21 km (13 mi) ESE of Ocotillo, CA
9990049 2.8 2004/03/10 22:05:26 35 24.6 N 117 48.4 W 7.5 27 km (17 mi) SSW of Ridgecrest, CA
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Comments Off
Commentary
Yesterday at 3:33 pm there was a ML2.9 quake (feelable size)in the Sierras 14 miles west-northwest of Inyokern. Later, at 8:57 pm, there was a ML3.2 at a different location in the Sierras, 11 miles west-southwest of Olancha. We have a few isolated “felt reports” on both of them.