M 7.9 in Mexico from 20 Mar 2012 18:02 UTC to 18:02

Event summary

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

Earthquake Magnitude: 7.9M
Depth: 10 Km
Lat/Lon: 17.041 , -98.115
Event Date: 20 Mar 2012 18:02 UTC
20 Mar 2012 12:02 Local
Exposed Population: 1270000 people within 100km
Source: NEIC usc0008m6h
Inserted at: 02 Feb 2017 13:09 UTC

GDACS Score

For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NEIC 1.6 1 1.6
usc0008m6h Scaled population (vector) n.a Max wave scenario 0m  
  C1 earthquake n.a Max wave realtime 0m  
  C2 earthquake n.a      
  Country Vulnerability n.a      
  INFORM_normalised n.a      
Maximum expected impact using different data sources.

Episode Timeline

IDAlertScoreDateMag, DepthMMI*Population**Tsunami risk***Delay (hh:mm)Source
115596 1.5 20 Mar 2012 18:02 7.7M, 10km N/A 1.1 million 0m (at 00:00) 1779d 19:06 NEIC
115597 1.6 20 Mar 2012 18:02 7.9M, 10km N/A 1.3 million 0m (at 00:00) 1779d 19:06 NEIC
115599 1.4 20 Mar 2012 18:02 7.6M, 17.5km N/A 980 thousand 0m (at 03:38) 1779d 19:06 NEIC
115601 1.3 20 Mar 2012 18:02 7.4M, 20km 7.7 980 thousand 0m (at 00:00) 1779d 19:06 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 Guerrero (population 2,867,451) . The nearest places are Laguna, Cuitlapa, Coyul, Putla de Guerrero, Huehuetono, Copala, Cuevas, Itunyaso, Metlatonoc, Xochistlahuaca, and Chilapa de Diaz.

Radius Population
100 km 1.2 million people
75 km 750000 people
50 km 310000 people
20 km 30000 people
10 km 5700 people
5 km <1000 people
2 km <1000 people

Affected Provinces

Region Province Country Population
Guerrero Mexico 2.8 million people
Oaxaca Mexico 3.3 million people

Affected populated places

Name Region Province Country City class Population Distance
Laguna Guerrero Mexico Village6 - 3 km
Cuitlapa Guerrero Mexico Village6 - 15 km
Coyul Oaxaca Mexico Village6 - 16 km
Putla de Guerrero Oaxaca Mexico Village5 - 18 km
Huehuetono Guerrero Mexico Village6 - 22 km
Copala Oaxaca Mexico Village6 - 22 km
Cuevas Oaxaca Mexico Village6 - 23 km
Itunyaso Oaxaca Mexico Village5 - 25 km
Metlatonoc Guerrero Mexico Village6 - 28 km
Xochistlahuaca Guerrero Mexico Village5 3500 people 31 km
San Cristóbal Guerrero Mexico Village6 - 32 km
Tlacoachixtlahuaca Guerrero Mexico Village5 - 33 km
Amole Oaxaca Mexico Village5 - 33 km
Jicaltepec Oaxaca Mexico Village6 - 33 km
San Martín Peras Oaxaca Mexico Village5 - 34 km
Zacatepec Oaxaca Mexico Village5 4400 people 34 km
Justlahuaca Oaxaca Mexico Village5 - 35 km
Santiago Oaxaca Mexico Village5 - 35 km
Chicahuaxtla Oaxaca Mexico Village6 - 36 km
Chixlixtlahuaca Guerrero Mexico Village6 - 37 km
Nuyoc Oaxaca Mexico Village6 - 39 km
Ocote Guerrero Mexico Village6 - 41 km
Loma Larga Oaxaca Mexico Village6 - 42 km
Montaña Oaxaca Mexico Village6 - 43 km
Asunción Atoyaquillo Oaxaca Mexico Village6 - 44 km
La Soledad Guerrero Mexico Village5 - 45 km
Ipalapa Oaxaca Mexico Village6 - 46 km
Santiago del Río Oaxaca Mexico Village5 - 47 km
Alcozauca Guerrero Mexico Village6 - 47 km
Cacahuatepec Oaxaca Mexico Village5 3500 people 48 km
Zitlaltepec Guerrero Mexico Village6 - 49 km
Ometepec Guerrero Mexico Village5 17000 people 49 km
Huanjintepec Guerrero Mexico Village5 - 50 km
Acatepec Guerrero Mexico Village6 - 51 km
Cabacera Nueva Oaxaca Mexico Village5 - 51 km
Chalcalongo Oaxaca Mexico Village5 - 51 km
Quetzalapa Guerrero Mexico Village6 - 52 km
Silacayoapam Oaxaca Mexico Village5 - 52 km
Tlaxiaco Oaxaca Mexico City 14000 people 53 km
Río de Tablas Oaxaca Mexico Village6 - 54 km
La Reforma Oaxaca Mexico Village5 - 54 km
Alto de las Mesas Oaxaca Mexico Village5 - 54 km
La Libertad Guerrero Mexico Village5 - 55 km
Piedra Ancha Guerrero Mexico Village5 - 57 km
San Juan Bautista lo de Soto Oaxaca Mexico Village5 - 57 km
Villa Hidalgo Oaxaca Mexico Village5 - 58 km
Moyotepec Guerrero Mexico Village6 - 59 km
Iliatenco Guerrero Mexico Village6 - 59 km
Vista Hermosa Guerrero Mexico Village5 - 61 km
Igualapa Guerrero Mexico Village5 - 62 km
Atlamajaicingo Guerrero Mexico Village6 - 63 km
Ixcatlan Oaxaca Mexico Village5 - 63 km
Amoltepec Oaxaca Mexico Village6 - 63 km
Penasco Oaxaca Mexico Village6 - 63 km
Huanacastle Oaxaca Mexico Village5 - 64 km
San Mateo Neyapan Oaxaca Mexico Village5 - 64 km
Tlalixtaquilla Guerrero Mexico Village6 - 65 km
Zacalipa Guerrero Mexico Village6 - 65 km
Jicayan Oaxaca Mexico Village5 4200 people 67 km
Tindaco Oaxaca Mexico Village6 - 68 km
Oztocingo Guerrero Mexico Village5 - 69 km
San Cristóbal Oaxaca Mexico Village6 - 69 km
Yucuxaca Oaxaca Mexico Village5 - 69 km
Chilapa de Diaz Oaxaca Mexico Village5 - 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
Tlaxiaco 2045 0 51 km
Ta lo de Soto 149 0 71 km
Pinotepa Nacional PNO unknown 0 77 km

Dams

Reservoir Dam Name River Year Distance
Yosocuta Huajuapan 1969 82 km

More information

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