El Salvador seismic activity

[Macrocane]

I created a thread about the January 18 Guatemala-El Salvador earthquakes a couple of days ago, but on this new topic I will post the data of every earthquake that is felt in El Salvador unless a strong or damaging earthquake occurs because in that case I will start a new thread.

Today at 08:42 (local time) a 4.6 magnitude earthquake was felt especially in the eastern part of the country, again the epicenter was located offshore in the subduction zone between Cocos and Caribbean Plates. Here is the data gave by the SNET:

Date: January 20 2010
Local Time: 08:42
Latitude (N): 12.632
Longitude (W): -88.369
Localization: 65 kilometers (40.6 miles) south of "Bocana La Chepona" in Usulutan department.
Depth: 14.6 km (9.1 miles)
Magnitude: 4.6
Intensity: II in San Salvador

Here is the link to the SNET: http://www.snet.gob.sv/ver/sismologia/monitoreo/sismos+sentidos/. The USGS didn't report it.

[Macrocane]

The activity in the Cocos-Caribbean subduction zone doesn't want to stop. This afternoon a new temblor was felt especially in eastern El Salvador. Here is the data according to SNET http://www.snet.gob.sv/ver/sismologia/monitoreo/sismos+sentidos/ :

Date: January 20, 2010
Local Time: 14:02
Latitude (N): 12.994
Longitude (W): -88.81
Location: 25 km south of Lempa River mouth.
Depth (km): 49.2
Magnitude: 4.0
Intensity: II in San Salvador

And this is the data for the earthquake that occured earlier today but according to USGS http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/us2010rsbr.php:

Magnitude: 4.5
Date-Time: Wednesday, January 20, 2010 at 14:42:47 UTC
Wednesday, January 20, 2010 at 08:42:47 AM at epicenter
Location: 12.438°N, 88.171°W
Depth: 59.7 km (37.1 miles) set by location program
Region: OFFSHORE EL SALVADOR
Distances: 110 km (70 miles) W of Chinandega, Nicaragua
115 km (70 miles) S of San Miguel, El Salvador
205 km (130 miles) W of MANAGUA, Nicaragua
1410 km (870 miles) ESE of MEXICO CITY, D.F., Mexico
Location Uncertainty: horizontal +/- 18.7 km (11.6 miles); depth fixed by location program
Parameters: NST= 18, Nph= 18, Dmin=203.9 km, Rmss=1.08 sec, Gp=194°,
M-type=body wave magnitude (Mb), Version=Q

[Macrocane]

A new earthquake has been felt in El Salvador but this time the epicenter was not located in the subduction zone but in San Salvador, the capital. It's worth to mention that when an earthquake's epicenter is offshore in the subduction zone it is felt in the whole contry and the movement is horizontal, but when an earthquake's epicenter is located inland in a fault line the movement is vertical and it is felt mostly in the areas near the epicenter. Here is the data for this earthquake:

Date: January 25 2010
Local Time: 20:27
Latitude (N): 13.741
Longitude (W): -89.205
Location: San Salvador's metropolitan area.
Depth (km): 5.8 (3.6 miles)
Magnitude: 3.2
Intensity: III in San Salvador.

[cycloneye]

Macrocane,there was a 4.8 quake this afternoon in El Salvador.

http://earthquake.usgs.gov/earthquakes/ ... 10scb1.php

Code: Select all

Magnitude 4.8
Date-Time Saturday, January 30, 2010 at 22:50:09 UTC
Saturday, January 30, 2010 at 04:50:09 PM at epicenter
Time of Earthquake in other Time Zones
 
Location 13.615°N, 88.283°W
Depth 190.9 km (118.6 miles)
Region EL SALVADOR
Distances 20 km (15 miles) NW of San Miguel, El Salvador
100 km (60 miles) E of SAN SALVADOR, El Salvador
125 km (75 miles) WSW of TEGUCIGALPA, Honduras
1320 km (820 miles) ESE of MEXICO CITY, D.F., Mexico
 


[Macrocane]

Thanks for the info cycloneye, it was not very sensible in San Salvador. The location according to the SNET was not inland but off the coast in the subduction zone wich seems more likely, here are the SNET parameters:

Date: January 30 2010
Local Time: 16:50
Latitude (N): 11.988
Longitude (W): -88.98
Location: 145 kilometers south of Costa del Sol beach, department of La Paz.
Depth (km): 23.7
Magnitude: 4.4
Intensity: II in San Salvador

http://www.snet.gob.sv/ver/sismologia/monitoreo/sismos+sentidos/

[Macrocane]

A weak tremor was felt in El Salvador especially in the coast as the epicenter was located in the subduction zone, here are the parameters provided by the SNET:

Date: February 4 2010
Local Time: 18:29
Latitude (N): 13.206
Longitude (W): -89.198
Location: 30 km south of Estero de Toluca in La Libertad.
Depth (km): 66.8
Magnitude: 4.1
Intensity: II in San Salvador

http://www.snet.gob.sv/ver/sismologia/monitoreo/sismos+sentidos/

[Macrocane]

Another quake was felt this morning in Guatemala and El Salvador, the epicenter was again in the subduction zone:

Date: February 05 2010
Local Time: 05:04
Latitude (N): 13.657
Longitude (W): -90.438
Location: Guatemala offshore.
Depth: 30.8 km (19.3 miles)
Magnitude: 4.3
Intensity: II in San Salvador.

[Macrocane]

The subduction zone has been very active this week. Here is the info of the last quake:

Date: February 06 2010
Local Time: 21:04
Latitude (N): 13.085
Longitude (W): -89.281
Location: 45 km South of San Diego Lagoon, department of La Libertad.
Depth (km): 45.5
Magnitude: 4.1
Intensity: II in San Salvador.

[Macrocane]

And the activity in the subduction zone continues. A new quake has been reported today:

Date: February 10 2010
Local Time: 17:56
Latitude (N): 13.099
Longitude (W): -89.842
Location: 45 km south of Acajutla port, Departament of Sonsonate (Western El Salvador)
Depth: 23 km (14 miles)
Magnitude: 4.5
Intensity: III in San Salvador

Link: http://www.snet.gob.sv/ver/sismologia/monitoreo/sismos+sentidos/

[Macrocane]

The activity in the subduction zone persists, it's not normal to have so earthquakes that frequently in El Salvador, 1 per week can be considered normal but in the last few days we've had almost one per day.

Here is the info of the last quake provided by the SNET:

Date: February 11 2010
Local Time: 18:26
Latitude (N): 13.064
Longitude (W): -89.018
Location: 30 km south of San Marcelino Beach Department of La Paz.
Depth: 42 km (26 miles)
Magnitude: 4.2
Intensity: II in San Salvador

[Macrocane]

Yesterday a weak earthquake was felt in the western third of the country, this time the epicenter was not in the subduction zone but in an inland fault:

Date: February 21 2010
Local Time: 20:04
Latitude (N): 13.879
Longitude (W): -89.382
Location: San Juan Opico Departament of La Libertad (15 miles northwest of San Salvador) .
Depth: 6 km (3.8 miles)
Magnitude: 3.2
Intensity: III in San Juan Opico

[Macrocane]

An earthquake was felt almost an hour an hour ago in El Salvador, according to USGS:

Magnitude: 4.6
Date-Time: Sunday, March 14, 2010 at 02:52:54 UTC
Saturday, March 13, 2010 at 08:52:54 PM at epicenter
Time of Earthquake in other Time Zones
Location: 12.849°N, 88.755°W
Depth: 76.3 km (47.4 miles)
Region: OFFSHORE EL SALVADOR
Distances: 95 km (60 miles) SW of San Miguel, El Salvador
105 km (65 miles) SSE of SAN SALVADOR, El Salvador
150 km (95 miles) SE of Santa Ana, El Salvador
1335 km (820 miles) ESE of MEXICO CITY, D.F., Mexico
Location Uncertainty: horizontal +/- 18.4 km (11.4 miles); depth +/- 10.6 km (6.6 miles)
Parameters: NST= 32, Nph= 32, Dmin=502.1 km, Rmss=0.98 sec, Gp=184°,
M-type=body wave magnitude (Mb), Version=7
Source: USGS NEIC (WDCS-D)
Event ID: us2010tvam

According to the SNET:

Date: March 13 2010
Local Time: 20:52
Latitude (N): 12.941
Longitude (W): -88.906
Location: 40 Km south of Bocana Cordoncillo Departament of La Paz.
Depth (km): 50
Magnitude: 4.6
Intensity: III in San Salvador

[Macrocane]

And one more earthquake in the subduction zone was registered this afternoon.

Date: March 15 2010
Local Time: 14:04
Latitude (N): 13.465
Longitude (O): -89.481
Location: 15 kilometers south of Bocana La Perla, La Libertad (central coast).
Depth (km): 79.4
Magnitude: 4.5
Intensity: III in San Salvador.

http://www.snet.gob.sv/ver/sismologia/monitoreo/sismos+sentidos/

[Macrocane]

An earthquake in the subduction zone was registered again today, the third one since saturday. According to the SNET:

Fecha: March 17 2010
Local Time: 03:09
Latitude (N): 12.9
Longitude (W): -89.113
Location: 45 kms South of Los Blancos Beach, Department of La Paz.
Depth: 36 km
Magnitude: 4.6
Intensity: II in San Salvador

http://www.snet.gob.sv/ver/sismologia/monitoreo/sismos+sentidos/

[Macrocane]

Two earthquakes have been felt in El Salvador today. The first one in the subduction zone offshore Guatemala.

USGS info:

Magnitude 4.9
Date-Time Wednesday, March 24, 2010 at 17:08:31 UTC
Wednesday, March 24, 2010 at 11:08:31 AM at epicenter
Location 14.077°N, 91.407°W
Depth 73 km (45.4 miles)
Region GUATEMALA
Distances 85 km (50 miles) S of Quezaltenango, Guatemala
115 km (70 miles) WSW of GUATEMALA CITY, Guatemala
130 km (80 miles) SE of Tapachula, Chiapas, Mexico
1020 km (630 miles) SE of MEXICO CITY, D.F., Mexico
Location Uncertainty horizontal +/- 11.9 km (7.4 miles); depth +/- 24.4 km (15.2 miles)
Parameters NST= 72, Nph= 72, Dmin=757.9 km, Rmss=1.19 sec, Gp=176°,
M-type=body wave magnitude (Mb), Version=6
Source USGS NEIC (WDCS-D)
Event ID us2010ufbe

And the most recent one located in the Ilopango caldera, according to the SNET:

Date: March 24 2010
Local Time: 12:46
Latitude (N): 13.681
Longitude (W): -89.061
Location: Lake Ilopango, department of San Salvador
Depth (km): 9
Magnitude: 3.4
Intensity: II in San Salvador

[Macrocane]

An earthquake was felt in the Gulf of Fonseca this afternoon, the origin of the quake was in the fairly active faults of that zone.

Date: March 27 2010
Local Time: 15:17
Latitude (N): 13.275
Longitude (O): -87.79
Location: Near Conchagua Department of La Union.
Depth (km): 10
Magnitude: 3
Intensity: III in Conchagua.

[Macrocane]

Two earthquakes were felt today in El Salvador but they were felt only in the areas near the epicenter as they had an origin in local faults (inland) and not in the subduction zone (in the ocean).

Date: April 10 2010
Local Time: 07:40:00
Latitude (N): 13.759
Longitude (W): -87.934
Location: 10 kms Northeast of Santa Rosa de Lima, departament of La Union (that's in the northeastern corner of the country).
Depth (km): 7.3
Magnitude: 4.3
Intensity: IV in Santa Rosa de Lima

Date: April 10 2010
Local Time: 14:53
Latitude (N): 14.001
Longitude (W): -89.837
Location: 5 km east of Las Chinamas (that's just east of the border with Guatemala).
Depth (km): 12.9
Magnitude: 2.7
Intensity: III in las Chinamas

[Macrocane]

A quake with its origin in the subduction zone occured today:

Date: April 17 2010
Local Time: 17:55
Latitude (N): 12.908
Longitude (W): -89.935
Location: 60 Km south of Metalio Beach department of Sonsonate (western El Salvador).
Depth (km): 19
Magnitude: 4
Intensity: II in San Salvador

[Macrocane]

An earthquake occured this morning in the Guatemala-Mexico border but it was felt in El Salvador too. The details according to USGS:

Magnitude 5.6
Date-Time Sunday, April 18, 2010 at 13:30:58 UTC
Sunday, April 18, 2010 at 07:30:58 AM at epicenter
Time of Earthquake in other Time Zones
Location 14.526°N, 92.010°W
Depth 57.9 km (36.0 miles) set by location program
Region GUATEMALA
Distances 50 km (30 miles) SE of Tapachula, Chiapas, Mexico
65 km (40 miles) WSW of Quezaltenango, Guatemala
160 km (100 miles) W of GUATEMALA CITY, Guatemala
930 km (580 miles) SE of MEXICO CITY, D.F., Mexico
Location Uncertainty horizontal +/- 6.6 km (4.1 miles); depth fixed by location program
Parameters NST=190, Nph=189, Dmin=745.4 km, Rmss=1.09 sec, Gp=151°,
M-type=teleseismic moment magnitude (Mw), Version=6
Source USGS NEIC (WDCS-D)
Event ID us2010vfa9
http://earthquake.usgs.gov/earthquakes/recenteqsww/Quakes/us2010vfa9.php#details

And according to SNET:

Date: April 18 2010
Local Time: 07:30
Latitude (N): 14.669
Longitude (W): -92.068
Location: Guatemala-Mexico border
Depth (km): 15
Magnitude: 5.8
Intensity: II in San Salvador

No damages have been reported yet.

[Macrocane]

A 5.2 earthquake was felt early this morning in El Salvador, I'm posting the details from the SNET because IMO the USGS estimation is too low (4.3 magnitude):

Date: May 3 2010
Local Time: 05:14
Latitude (N): 12.951
Longitude (W): -89.347
Location: 55 Km south of Conchalio Beach Department of La Libertad
Depth (km): 36
Magnitude: 5.2
Intensity: IV in San Salvador