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

Hazard models

EQ parameters
Shakemap
Tsunami

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 (in 100km) 0m (at 00:00) 1779d 19:06 NEIC
115597 1.6 20 Mar 2012 18:02 7.9M, 10km N/A 1.3 million (in 100km) 0m (at 00:00) 1779d 19:06 NEIC
115599 1.4 20 Mar 2012 18:02 7.6M, 17.5km N/A 980 thousand (in 100km) 0m (at 03:38) 1779d 19:06 NEIC
115601 1.3 20 Mar 2012 18:02 7.4M, 20km 7.7 220 thousand (in MMI>=VII) 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 1.3 million people
75 km 750000 people
50 km 320000 people
20 km 31000 people
10 km 5800 people
5 km <1000 people
2 km <1000 people

Affected Provinces

Region Province Country Population
Guerrero Mexico 2.9 million people
Oaxaca Mexico 3.3 million people

Affected populated places

Name Region Province Country City class Population Distance
Laguna Guerrero Mexico Village - 3 km
Cuitlapa Guerrero Mexico Village - 15 km
Coyul Oaxaca Mexico Village - 16 km
Putla de Guerrero Oaxaca Mexico Village - 18 km
Huehuetono Guerrero Mexico Village - 22 km
Copala Oaxaca Mexico Village - 22 km
Cuevas Oaxaca Mexico Village - 23 km
Itunyaso Oaxaca Mexico Village - 25 km
Metlatonoc Guerrero Mexico Village - 28 km
Xochistlahuaca Guerrero Mexico Village 3500 people 31 km
San Cristóbal Guerrero Mexico Village - 32 km
Tlacoachixtlahuaca Guerrero Mexico Village - 33 km
Amole Oaxaca Mexico Village - 33 km
Jicaltepec Oaxaca Mexico Village - 33 km
San Martín Peras Oaxaca Mexico Village - 34 km
Zacatepec Oaxaca Mexico Village 4400 people 34 km
Justlahuaca Oaxaca Mexico Village - 35 km
Santiago Oaxaca Mexico Village - 35 km
Chicahuaxtla Oaxaca Mexico Village - 36 km
Chixlixtlahuaca Guerrero Mexico Village - 37 km
Nuyoc Oaxaca Mexico Village - 39 km
Ocote Guerrero Mexico Village - 41 km
Loma Larga Oaxaca Mexico Village - 42 km
Montaña Oaxaca Mexico Village - 43 km
Asunción Atoyaquillo Oaxaca Mexico Village - 44 km
La Soledad Guerrero Mexico Village - 45 km
Ipalapa Oaxaca Mexico Village - 46 km
Santiago del Río Oaxaca Mexico Village - 47 km
Alcozauca Guerrero Mexico Village - 47 km
Cacahuatepec Oaxaca Mexico Village 3600 people 48 km
Zitlaltepec Guerrero Mexico Village - 49 km
Ometepec Guerrero Mexico Village 18000 people 49 km
Huanjintepec Guerrero Mexico Village - 50 km
Acatepec Guerrero Mexico Village - 51 km
Cabacera Nueva Oaxaca Mexico Village - 51 km
Chalcalongo Oaxaca Mexico Village - 51 km
Quetzalapa Guerrero Mexico Village - 52 km
Silacayoapam Oaxaca Mexico Village - 52 km
Tlaxiaco Oaxaca Mexico City 15000 people 53 km
Río de Tablas Oaxaca Mexico Village - 54 km
La Reforma Oaxaca Mexico Village - 54 km
Alto de las Mesas Oaxaca Mexico Village - 54 km
La Libertad Guerrero Mexico Village - 55 km
Piedra Ancha Guerrero Mexico Village - 57 km
San Juan Bautista lo de Soto Oaxaca Mexico Village - 57 km
Villa Hidalgo Oaxaca Mexico Village - 58 km
Moyotepec Guerrero Mexico Village - 59 km
Iliatenco Guerrero Mexico Village - 59 km
Vista Hermosa Guerrero Mexico Village - 61 km
Igualapa Guerrero Mexico Village - 62 km
Atlamajaicingo Guerrero Mexico Village - 63 km
Ixcatlan Oaxaca Mexico Village - 63 km
Amoltepec Oaxaca Mexico Village - 63 km
Penasco Oaxaca Mexico Village - 63 km
Huanacastle Oaxaca Mexico Village - 64 km
San Mateo Neyapan Oaxaca Mexico Village - 64 km
Tlalixtaquilla Guerrero Mexico Village - 65 km
Zacalipa Guerrero Mexico Village - 65 km
Jicayan Oaxaca Mexico Village 4200 people 67 km
Tindaco Oaxaca Mexico Village - 68 km
Oztocingo Guerrero Mexico Village - 69 km
San Cristóbal Oaxaca Mexico Village - 69 km
Yucuxaca Oaxaca Mexico Village - 69 km
Chilapa de Diaz Oaxaca Mexico Village - 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.