Special Reports
Earthquake swarm strikes southern Mexicali Valley,
Baja California, Mexico

Seismo-Watch More Special Earthquake Reports

Friday, January 4, 2002

Preliminary data indicates that a vigorous earthquake swarm occurred today south of the California-Mexico border in southern Mexicali Valley and in the Colorado Delta region.

According to the Southern California Seismic Network (SCSN), the swarm began about 9:30 a.m. and has consisted of at least 45 quakes measuring M2.0 or stronger, including 17 in the M3 range. The largest earthquake measured M3.6 and occurred at 8:24 p.m. (See list below)

The swarm tapered off by mid evening hours and no action has been reported since.

Subscribers to the Seismo-Watch EQ Flash! Alert Bulletins received a notifications within minutes of earthquakes measuring M3+.

Most off the activity is centered along the southern extent of the Imperial Valley fault zone, just before it crosses the Colorado River. Some of the action occurred a little further south in the Colorado Delta region and are too far south to be shown on the TriNet earthquake maps. Data processing for the action in Mexico will not be completed for some time, making the true extent of the swarm unknown till then.

There have been no reports of damage or injuries at this time.

Earthquake activity along this portion of the Imperial fault has been elevated ever since a M5.7 earthquake struck the Colorado Delta on December 8.

More information will be added as it becomes available. Check back later or subscribe to the EQ Flash! Alert Bulletin service to be notified when M3+ earthquakes have occurred in California/Western Nevada/Northern Baja, or the USA as a whole.

Here is a list of events thus far:

02/01/04 17:35:12  32.43N 115.10W   7.0 2.8ML  C   28 mi. SE  of Calexico, CA
02/01/04 17:35:12  32.43N 115.10W   7.0 2.8ML  C   28 mi. SE  of Calexico, CA
02/01/04 17:58:55  32.41N 115.09W   7.0 2.3ML  C   29 mi. SE  of Calexico, CA
02/01/04 18:02:33  32.44N 115.09W   7.0 2.6ML  C   28 mi. SE  of Calexico, CA
02/01/04 18:04:26  32.42N 115.10W   7.0 2.2ML  C   28 mi. SE  of Calexico, CA
02/01/04 18:08:05  32.41N 115.10W   7.0 2.3ML  C   28 mi. SE  of Calexico, CA
02/01/04 18:41:51  32.43N 115.11W   7.0 2.5ML  C   27 mi. SE  of Calexico, CA
02/01/04 19:29:30  32.41N 115.11W   7.0 3.5ML  C   28 mi. SE  of Calexico, CA
02/01/04 19:37:41  32.42N 115.09W   0.0 2.4ML  C*  28 mi. SE  of Calexico, CA
02/01/04 19:38:07  32.43N 115.08W   7.0 3.3ML  C   29 mi. SE  of Calexico, CA
02/01/04 19:52:14  32.41N 115.08W   7.0 2.8ML  C   30 mi. SE  of Calexico, CA
02/01/04 19:54:17  32.41N 115.09W   7.0 2.4ML  C   29 mi. SE  of Calexico, CA
02/01/04 19:55:54  32.43N 115.09W   7.0 3.0ML  C   28 mi. SE  of Calexico, CA
02/01/04 19:59:55  32.45N 115.09W   7.0 2.6ML  C   28 mi. ESE of Calexico, CA
02/01/04 20:18:22  32.43N 115.09W   7.0 2.4ML  C   28 mi. SE  of Calexico, CA
02/01/04 20:19:46  32.44N 115.08W   7.0 2.5ML  C   28 mi. ESE of Calexico, CA
02/01/04 20:21:21  32.42N 115.08W   7.0 3.0ML  C   29 mi. SE  of Calexico, CA
02/01/04 20:34:19  32.39N 115.08W   7.0 2.1ML  C   31 mi. SE  of Calexico, CA
02/01/04 21:12:01  32.41N 115.11W   7.0 2.3ML  C   28 mi. SE  of Calexico, CA
02/01/04 21:24:39  32.43N 115.08W   7.0 2.7ML  C   29 mi. SE  of Calexico, CA
02/01/04 21:48:55  32.42N 115.10W   7.0 3.0ML  C   28 mi. SE  of Calexico, CA
02/01/05 00:01:07  32.59N 114.94W  15.7 2.7ML  B*  20 mi. WSW of Yuma, AZ
02/01/05 02:28:08  32.74N 115.67W  27.4 3.2ML  A*   8 mi. WSW of El Centro, CA
02/01/05 04:00:06  32.51N 115.09W  39.5 3.3ML  C*  25 mi. ESE of Calexico, CA
02/01/05 04:19:05  32.39N 115.00W  48.0 3.2ML  C*  31 mi. SW  of Yuma, AZ
02/01/05 04:24:13  32.42N 115.06W  32.1 3.6ML  C*  30 mi. SE  of Calexico, CA
02/01/05 04:32:11  32.61N 115.23W  30.4 3.1ML  C*  16 mi. ESE of Calexico, CA
02/01/05 04:38:59  32.35N 114.99W  39.4 3.1ML  C*  32 mi. SW  of Yuma, AZ
02/01/05 20:18:01  32.55N 116.42W   0.4 2.1ML  C*  29 mi. WSW of Ocotillo, CA
02/01/05 21:02:27  32.37N 115.09W   0.0 2.9ML  C*  31 mi. SE  of Calexico, CA
02/01/05 21:09:57  32.26N 115.01W  18.1 3.0ML  B*  38 mi. SW  of Yuma, AZ
02/01/05 21:56:51  32.38N 115.08W   0.0 2.9ML  C*  31 mi. SE  of Calexico, CA
02/01/06 00:37:09  32.33N 115.07W   0.0 3.0ML  C*  34 mi. SE  of Calexico, CA
02/01/06 00:43:55  32.29N 115.02W  24.8 3.2ML  B*  37 mi. SW  of Yuma, AZ
02/01/06 01:04:27  32.44N 115.08W  23.8 2.9ML  B*  28 mi. SE  of Calexico, CA
02/01/06 01:25:11  32.42N 115.07W  25.9 3.1ML  B*  30 mi. SE  of Calexico, CA
02/01/06 04:09:25  32.26N 115.01W  26.7 2.2ML  A*  38 mi. SW  of Yuma, AZ
02/01/06 04:57:57  32.28N 115.04W  10.1 2.3ML  B*  37 mi. SE  of Calexico, CA
02/01/06 11:58:49  32.29N 115.02W  10.7 2.3ML  B*  37 mi. SW  of Yuma, AZ
02/01/06 12:03:00  32.32N 115.02W  26.4 3.0ML  B*  35 mi. SW  of Yuma, AZ
02/01/06 13:31:21  32.43N 115.08W  25.9 2.4ML  B*  28 mi. SE  of Calexico, CA
02/01/06 13:40:12  32.40N 115.05W  23.8 2.9ML  B*  31 mi. SE  of Calexico, CA
02/01/07 02:02:58  32.40N 115.10W   1.9 2.8ML  C*  29 mi. SE  of Calexico, CA
02/01/07 05:01:53  32.43N 115.09W   0.0 2.7ML  B*  28 mi. SE  of Calexico, CA.
Report update: 9:13:33 PM, Wednesday, March 27, 2002
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