Overall Green Earthquake alert in Mexico on 27 Jul 2017 22:56 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 4.5 in Mexico on 27 Jul 2017 22:56 UTC

Hazard models

EQ parameters

Shakemap

Tsunami

Event summary

This is a preliminary assessment. The final GDACS Alert Level has been/will be published using more detailed information.

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

Earthquake Magnitude:	4.5M
Depth:	107.09 Km
Lat/Lon:	16.4564 , -94.5201
Event Date:	27 Jul 2017 22:56 UTC 27 Jul 2017 17:56 Local
Exposed Population:	840000 people within 100km
Source:	NEIC us2000a20c
Inserted at:	27 Jul 2017 23:30 UTC
INFORM Coping capacity of the alert score	4.4 (Mexico)

GDACS Score

For more info on GDACS alert score click here.

	Earthquake		GDACS score
NEIC	n.a		n.a
us2000a20c	Scaled population (vector)	0
	C1 earthquake	1
	C2 earthquake	0
	Country Vulnerability	0
	INFORM_normalised	1

Maximum expected impact using different data sources.

Episode Timeline

ID	Alert	Score	Date	Mag, Depth	MMI*	Population**	Tsunami risk***	Delay (hh:mm)	Source
1175558		n.a	27 Jul 2017 22:56	4.5M, 107.09km	N/A	850 thousand (in 100km)		00:34	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 Oaxaca (population 3,329,574) . The nearest places are Cocú, Reforma, Conchita, Ixhuatán, Niltepec, Zanatepec, Los Icacos, La Majada, Majada Coyote, Charnehuite, and Cabrera.

Radius	Population
100 km	820000 people
75 km	390000 people
50 km	130000 people
20 km	36000 people
10 km	5900 people
5 km	<1000 people
2 km	<1000 people

Affected Provinces

Region Province	Country	Population
Oaxaca	Mexico	3.3 million people

Affected populated places

Name	Region Province	Country	City class	Population	Distance
Cocú	Oaxaca	Mexico	Village	-	9 km
Reforma	Oaxaca	Mexico	Village	-	9 km
Conchita	Oaxaca	Mexico	Village	-	12 km
Ixhuatán	Oaxaca	Mexico	Village	5500 people	14 km
Niltepec	Oaxaca	Mexico	Village	3200 people	14 km
Zanatepec	Oaxaca	Mexico	Village	6900 people	17 km
Los Icacos	Oaxaca	Mexico	Village	-	18 km
La Majada	Oaxaca	Mexico	Village	-	18 km
Majada Coyote	Oaxaca	Mexico	Village	-	20 km
Charnehuite	Oaxaca	Mexico	Village	-	21 km
Cabestrada	Oaxaca	Mexico	Village	-	22 km
Soledad	Oaxaca	Mexico	Village	-	23 km
Chico Zapote	Oaxaca	Mexico	Village	-	23 km
San Francisco del Mar	Oaxaca	Mexico	Village	4000 people	27 km
Cacaotal	Oaxaca	Mexico	Village	-	28 km
San Dionisio del Mar	Oaxaca	Mexico	Village	3300 people	28 km
Chicapa	Oaxaca	Mexico	Village	-	31 km
Unión Hidalgo	Oaxaca	Mexico	City	12000 people	33 km
Tapanatepec	Oaxaca	Mexico	Village	7100 people	34 km
Agua Escondida	Oaxaca	Mexico	Village	-	37 km
San Miguel Chimalapa	Oaxaca	Mexico	Village	-	38 km
Pesquería	Oaxaca	Mexico	Village	-	39 km
Huajapan	Oaxaca	Mexico	Village	-	40 km
Chahuites	Oaxaca	Mexico	Village	9700 people	40 km
San Francisco	Oaxaca	Mexico	Village	-	44 km
Agua Fría	Oaxaca	Mexico	Village	-	45 km
Cordoncillo	Oaxaca	Mexico	Village	-	47 km
Descargadero de Puebla	Chiapas	Mexico	Village	-	47 km
Xocotepec	Oaxaca	Mexico	Village	-	48 km
Guadalupe	Oaxaca	Mexico	Village	-	51 km
Escuilapa	Oaxaca	Mexico	Village	-	51 km
El Roble	Oaxaca	Mexico	Village	-	51 km
Juchitan	Oaxaca	Mexico	City	66000 people	53 km
Santa María Xandani	Oaxaca	Mexico	Village	-	54 km
Chimalapa	Oaxaca	Mexico	Village	-	54 km
Asunción	Oaxaca	Mexico	Village	-	57 km
Dolores	Chiapas	Mexico	Village	-	57 km
Costa Rica	Oaxaca	Mexico	Village	-	57 km
Carnicería	Oaxaca	Mexico	Village	-	57 km
Agua Caliente	Oaxaca	Mexico	Village	-	57 km
Horizonte	Chiapas	Mexico	Village	-	57 km
Ixaltepec	Oaxaca	Mexico	Village	-	58 km
La Providencia	Chiapas	Mexico	Village	-	59 km
La Punta	Chiapas	Mexico	Village	-	60 km
Ciudad Ixtepec	Oaxaca	Mexico	City	-	63 km
Chahuite	Oaxaca	Mexico	Village	-	63 km
Llano Grande	Chiapas	Mexico	Village	-	64 km
Emiliano Zapata	Chiapas	Mexico	Village	-	64 km
Lagarto	Oaxaca	Mexico	Village	-	64 km
Almoloya	Oaxaca	Mexico	Village	-	67 km
Cachimba	Chiapas	Mexico	Village	-	67 km
Comitancillo	Oaxaca	Mexico	Village	3800 people	68 km
Cabrera	Oaxaca	Mexico	Village	-	68 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
Ixtepec Military		50	Civ.	Paved	Yes	7500	61 km
Ixtepec	IZT	unknown				0	63 km
Salina Cruz	SCX	23				0	78 km

Ports

Name	LOCODE	Country	Distance
Salina Cruz	MXSCX	Mexico	80 km

Dams

Reservoir	Dam Name	River	Year	Distance
	Presidente Benito Juarez	Tehuantepec	1961	94 km

More information

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

Disclaimer
While we try everything to ensure accuracy, this information is purely indicative and should not be used for any decision making without alternate sources of information.
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