Overall Green Earthquake alert in Mexico on 21 Jan 2012 19:46 UTC

GDACS is a cooperation framework between the United Nations, the European Commission and disaster managers worldwide to improve alerts, information exchange and coordination in the first phase after major sudden-onset disasters.

M 4.6 in Mexico on 21 Jan 2012 19:46 UTC

Hazard models

EQ parameters

Shakemap

Tsunami

Event summary

This earthquake is expected to have a low humanitarian impact based on the magnitude and the affected population and their vulnerability.

Earthquake Magnitude:	4.6M
Depth:	63.1 Km
Lat/Lon:	14.9393 , -93.1061
Event Date:	21 Jan 2012 19:46 UTC 21 Jan 2012 13:46 Local
Exposed Population:	730000 people within 100km
Source:	NEIC usc0007ppi
Inserted at:	21 Jan 2012 21:54 UTC

GDACS Score

For more info on GDACS alert score click here.

	Earthquake		GDACS score
NEIC	0.5		0.5
usc0007ppi	Scaled population (vector)	n.a
	C1 earthquake	n.a
	C2 earthquake	n.a
	Country Vulnerability	n.a
	INFORM_normalised	n.a

Maximum expected impact using different data sources.

Episode Timeline

ID	Alert	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
114351		0.5	21 Jan 2012 19:46	4.6M, 63.1km	N/A	730 thousand (in 100km)		02:07	NEIC

The episode that generated the alert; the next major evaluations beyond 12 hours will not trigger additional alerts.

The episode that has the last updated information.

* The max MMI detected for sources having shakemaps;
** The population detected in MMI>=7 for episode with shakemap or in a 100km radius;
*** The tsunami max height.

Exposed population

The earthquake happened in Mexico , State of Chiapas (population 3,524,501) . The nearest places are La Concepion, Pasito de la Señora, El Chilar, El Arenal, Boquerón, Barra de San José, La Zacualpa, Doña Maria, Flores Magón, Acapetagua, and Mazatán.

Radius	Population
100 km	790000 people
75 km	280000 people
50 km	22000 people
20 km	no people
10 km	no people
5 km	no people
2 km	no people

Affected Provinces

Region Province	Country	Population
Chiapas	Mexico	3.5 million people
San Marcos	Guatemala	810000 people
Quezaltenango	Guatemala	630000 people
Retalhuleu	Guatemala	260000 people
Huehuetenango	Guatemala	740000 people
Oaxaca	Mexico	3.3 million people
Totonicapan	Guatemala	350000 people
Suchitepequez	Guatemala	410000 people
Solola	Guatemala	260000 people
Escuintla	Guatemala	570000 people
Quiche	Guatemala	560000 people
Chimaltenango	Guatemala	390000 people
Baja Verapaz	Guatemala	200000 people
Sacatepequez	Guatemala	210000 people
Guatemala	Guatemala	2.2 million people
Veracruz	Mexico	6.8 million people
Alta Verapaz	Guatemala	510000 people
Tabasco	Mexico	1.6 million people
Santa Rosa	Guatemala	330000 people
El Progreso	Guatemala	140000 people
Jalapa	Guatemala	230000 people
Peten	Guatemala	230000 people
Jutiapa	Guatemala	430000 people
Zacapa	Guatemala	200000 people
Ahuachapan	El Salvador	300000 people
Campeche	Mexico	580000 people
Chiquimula	Guatemala	290000 people
Sonsonate	El Salvador	400000 people
Izabal	Guatemala	330000 people
Santa Ana	El Salvador	520000 people
Ocotepeque	Honduras	89000 people
Chalatenango	El Salvador	270000 people
La Libertad	El Salvador	490000 people
Copan	Honduras	260000 people
San Salvador	El Salvador	1.2 million people
Toledo	Belize	17000 people
Cuscatlan	El Salvador	230000 people
Cayo	Belize	34000 people
Lempira	Honduras	210000 people
La Paz	El Salvador	310000 people
Cabanas	El Salvador	210000 people
Santa Barbara	Honduras	310000 people
San Vicente	El Salvador	230000 people

Affected populated places

Name	Region Province	Country	City class	Population	Distance
La Concepion	Chiapas	Mexico	Village	-	40 km
Pasito de la Señora	Chiapas	Mexico	Village	-	40 km
El Chilar	Chiapas	Mexico	Village	-	43 km
El Arenal	Chiapas	Mexico	Village	-	47 km
Boquerón	Chiapas	Mexico	Village	-	48 km
Barra de San José	Chiapas	Mexico	Village	-	50 km
La Zacualpa	Chiapas	Mexico	Village	-	53 km
Doña Maria	Chiapas	Mexico	Village	-	53 km
Flores Magón	Chiapas	Mexico	Village	-	54 km
Acapetagua	Chiapas	Mexico	Village	-	54 km
Mapastepec	Chiapas	Mexico	City	16000 people	54 km
Francisco I. Madero	Chiapas	Mexico	Village	-	59 km
Escuintla	Chiapas	Mexico	Village	8900 people	59 km
Pueblo Nuevo	Chiapas	Mexico	City	-	60 km
Lazaro Cárdenas	Chiapas	Mexico	Village	-	61 km
Margaritas	Chiapas	Mexico	Village	-	61 km
Aquiles Serdan	Chiapas	Mexico	Village	-	61 km
Jericó	Chiapas	Mexico	Village	-	63 km
La Victoria	Chiapas	Mexico	Village	-	64 km
Buenos Aires	Chiapas	Mexico	Village	-	66 km
Huixtla	Chiapas	Mexico	City	29000 people	69 km
Mazatán	Chiapas	Mexico	Village	5700 people	69 km

see full list

Critical infrastructure

Airports, ports, nuclear plants and hydrodams at risk, if affected, are listed below.

Airports

Name	IATA Code	Elevation (m)	Usage	Runway type	IFR	Runway Length (ft)	Distance
Tapachula International	TAP	29	Civ.	Paved	Yes	6500	79 km
Tapachula		110				0	84 km

Ports

Name	LOCODE	Country	Distance
Puerto Madero	MXPMD	Mexico	77 km

More information

For a full list of available products related to this event, please refer to the GDACS Resources page.

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