M 7.4 in Mexico on 20 Mar 2012 18:02 UTC

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: 7.4M
Depth: 20 Km
Lat/Lon: 16.662 , -98.188
Event Date: 20 Mar 2012 18:02 UTC
20 Mar 2012 12:02 Local
Exposed Population: 220000 people in MMI
980000 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 1.3 0 1.3
usc0008m6h Scaled population (vector) Max wave scenario 0m  
  C1 earthquake Max wave realtime 0m  
  C2 earthquake      
  Country Vulnerability      
  INFORM_normalised      
Maximum expected impact using different data sources.

ShakeMap is a product of the USGS Earthquake Hazards Program in conjunction with the regional seismic networks. ShakeMaps provide near-real-time maps of ground motion and shaking intensity following significant earthquakes.


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 ,of Oaxaca (population 87,937) . The alertlevel for this event is Green

Intensity Population
220000 people
350000 people
1.9 million people


Shakemaps Timeline

AlertShake id #ScoreepisodeidLat/LonMagnitudeDepthMax MMIDate shake (UTC)Delay (hh:mm) 
1 0 115601 0/0 N/A N/A N/A 21 Feb 2018 13:07 2163d 19:05 (new episode)

Affected Provinces

Intensity Region Province Country Population
Oaxaca Mexico 150000 people
Guerrero Mexico 73000 people
Oaxaca Mexico 140000 people
Guerrero Mexico 220000 people
Oaxaca Mexico 420000 people
Guerrero Mexico 1 million people
Puebla Mexico 180000 people
Oaxaca Mexico 1.5 million people
Guerrero Mexico 690000 people
Puebla Mexico 2 million people
Morelos Mexico 2100 people
Veracruz Mexico 380000 people
Tlaxcala Mexico 2400 people
Distrito Federal Mexico <1000 people

Affected populated places. Areas of interest

Intensity Name Region Province Country City class Population Distance
Cacahuatepec Oaxaca Mexico Village 3600 people 7 km
Huanjintepec Guerrero Mexico Village - 8 km
Alto de las Mesas Oaxaca Mexico Village - 14 km
Xochistlahuaca Guerrero Mexico Village 3500 people 15 km
San Juan Bautista lo de Soto Oaxaca Mexico Village - 15 km
Tlacoachixtlahuaca Guerrero Mexico Village - 20 km
Piedra Ancha Guerrero Mexico Village - 20 km
Huanacastle Oaxaca Mexico Village - 22 km
Vista Hermosa Guerrero Mexico Village - 32 km
Cuajinicuilapa Guerrero Mexico Village 9300 people 32 km
Jicayan Oaxaca Mexico Village 4200 people 32 km
Pinotepa Oaxaca Mexico Village - 39 km
Armenta Oaxaca Mexico Village - 41 km
Santiago Oaxaca Mexico Village - 42 km
Las Conchitas Oaxaca Mexico Village - 45 km
San Andres Oaxaca Mexico Village - 49 km
Ometepec Guerrero Mexico Village 18000 people 22 km
La Soledad Guerrero Mexico Village - 23 km
Zacatepec Oaxaca Mexico Village 4400 people 24 km
Amole Oaxaca Mexico Village - 36 km
La Reforma Oaxaca Mexico Village - 37 km
Igualapa Guerrero Mexico Village - 44 km
Putla de Guerrero Oaxaca Mexico Village - 49 km
El Cacao Oaxaca Mexico Village - 56 km
Ixtayutla Oaxaca Mexico Village - 58 km
Jamiltepec Oaxaca Mexico City 9800 people 58 km
San Luis Acatlan Guerrero Mexico Village - 60 km
Marquelia Guerrero Mexico Village 6800 people 67 km
Yegüey Oaxaca Mexico Village - 78 km
Copala Guerrero Mexico Village 6800 people 84 km
Cruz Grande Guerrero Mexico Village 9800 people 100 km
Itunyaso Oaxaca Mexico Village - 54 km
Cabacera Nueva Oaxaca Mexico Village - 61 km
Pueblo Viejo Oaxaca Mexico Village - 66 km
San Martín Peras Oaxaca Mexico Village - 71 km
Chalcalongo Oaxaca Mexico Village - 72 km
Santa Cruz Zenzontepec Oaxaca Mexico Village - 73 km
Ixcatlan Oaxaca Mexico Village - 74 km
Justlahuaca Oaxaca Mexico Village - 77 km
Cuanana Oaxaca Mexico Village - 77 km
Villa Hidalgo Oaxaca Mexico Village - 78 km
Santiago Oaxaca Mexico Village - 78 km
Coacoyulichan Guerrero Mexico Village - 82 km
Tlaxiaco Oaxaca Mexico City 15000 people 86 km
San Francisco Oaxaca Mexico Village - 86 km
Oztocingo Guerrero Mexico Village - 88 km
Santiago del Río Oaxaca Mexico Village - 90 km
La Libertad Guerrero Mexico Village - 91 km
Silacayoapam Oaxaca Mexico Village - 94 km
Santa María Zaniza Oaxaca Mexico Village - 95 km
Panixtlahuaca Oaxaca Mexico Village 5600 people 97 km
Xalpatlahuac Guerrero Mexico Village 4000 people 101 km
Ayutla Guerrero Mexico City 9900 people 102 km
San Mateo Neyapan Oaxaca Mexico Village - 103 km
Huajintepec Oaxaca Mexico Village - 103 km
Achiutla Oaxaca Mexico Village - 104 km
Zacatepec Oaxaca Mexico Village - 105 km
Yucuxaca Oaxaca Mexico Village - 105 km
Tlapa Guerrero Mexico Village 37000 people 106 km
Ixpantepec Oaxaca Mexico Village - 110 km
Caridad Guerrero Mexico Village - 112 km
Tamazola Oaxaca Mexico Village - 112 km
Yolomécatl Oaxaca Mexico Village - 112 km
Tezoatlán Oaxaca Mexico Village - 117 km
Cortijo Guerrero Mexico Village - 119 km
Bajos de Chila Oaxaca Mexico Village - 121 km
San Marcos Guerrero Mexico City 12000 people 130 km
Nochixtlan Oaxaca Mexico Village - 131 km
La Asunción Ocotlán Oaxaca Mexico Village - 158 km
Petaquilla Guerrero Mexico Village - 163 km
Tixtla Guerrero Mexico City 21000 people 165 km
Aguacatillo Guerrero Mexico Village - 170 km
Chilpancingo Guerrero Mexico Major city 160000 people 171 km
El Marqués Guerrero Mexico Village - 175 km
Acapulco Guerrero Mexico Major city 640000 people 185 km
Acatzingo Puebla Mexico Village 22000 people 260 km
Sindihui Oaxaca Mexico Village - 101 km
Yucuane Oaxaca Mexico Village - 103 km
Xochitepec Guerrero Mexico Village - 104 km
Chilapa de Diaz Oaxaca Mexico Village - 109 km
Yucucondo Oaxaca Mexico Village - 109 km
Tonalá Oaxaca Mexico Village - 116 km
Santa Cruz Mitlatengo Oaxaca Mexico Village - 117 km
Nuño Oaxaca Mexico Village - 119 km
Santa Lucía Teotepec Oaxaca Mexico Village - 120 km
Tlatayapan Oaxaca Mexico Village - 120 km
Teposcolula Oaxaca Mexico Village - 120 km
Santa María Xucuñuti Oaxaca Mexico Village - 123 km
Juchatengo Oaxaca Mexico City - 123 km
Manzintla Guerrero Mexico City - 126 km
Jaltepec Oaxaca Mexico Village - 126 km
Tiltepec Oaxaca Mexico Village - 127 km
Asunción Nochixtlán Oaxaca Mexico City 9800 people 127 km
Atlixtac Guerrero Mexico Village - 127 km
La Perla Oaxaca Mexico Village - 128 km
Chiaucingo Guerrero Mexico Village - 130 km
Los Fustes Oaxaca Mexico Village - 131 km
Hueycaltenango Guerrero Mexico Village - 131 km
Silacayoapilla Oaxaca Mexico Village - 132 km
Colotlipa Guerrero Mexico Village - 133 km
Huamuxtitlán Guerrero Mexico Village 5700 people 134 km
Mariscala Oaxaca Mexico Village - 134 km
Huajuapan de León Oaxaca Mexico City - 134 km
Santa Ana Rayón Oaxaca Mexico Village - 134 km
Nochistlan Oaxaca Mexico Village - 135 km
Tamazulapam Oaxaca Mexico Village 4800 people 136 km
San Pedro Mixtepec Oaxaca Mexico Village - 137 km
Coyotepec Oaxaca Mexico Village - 138 km
Olinala Guerrero Mexico Village 5200 people 138 km
Tlaltepexi Puebla Mexico Village - 138 km
Chochos Oaxaca Mexico Village - 139 km
Quechultenango Guerrero Mexico Village 5000 people 139 km
Mixtepec Oaxaca Mexico Village - 140 km
Totolapa Guerrero Mexico Village - 140 km
Las Mesas Guerrero Mexico Village - 141 km
Ayoquesco Oaxaca Mexico Village - 142 km
Santiago Ayuquililla Oaxaca Mexico Village - 144 km
Santa Ines Oaxaca Mexico Village - 144 km
Tlapacoyan Oaxaca Mexico Village - 146 km
Camotlan Oaxaca Mexico Village - 146 km
Temalacacingo Guerrero Mexico Village - 146 km
San Vicente Coatlán Oaxaca Mexico Village - 147 km
Suchix Hahuaca Oaxaca Mexico Village - 149 km
Puerto Escondido Oaxaca Mexico Village 19000 people 149 km
Chichihualtepec Oaxaca Mexico Village - 150 km
Yogana Oaxaca Mexico Village - 151 km
Tejalapam Oaxaca Mexico Village - 152 km
Zautla Oaxaca Mexico Village - 152 km
Zimatlán Oaxaca Mexico City 9700 people 152 km
Chilapa Guerrero Mexico Village 23000 people 153 km
Las Sedas Oaxaca Mexico Village - 153 km
La Cienega Oaxaca Mexico Village - 153 km
Tierra Colorada Guerrero Mexico Village 10000 people 153 km
Santiago Iguitlan Plumes Oaxaca Mexico Village - 154 km
Chagues Oaxaca Mexico Village - 154 km
Tulcingo Puebla Mexico Village 5600 people 154 km
Salto de Valadez Guerrero Mexico Village - 154 km
Cuixtla Oaxaca Mexico Village - 154 km
Paso Hondo Oaxaca Mexico Village - 155 km
Telixtlahuaca Oaxaca Mexico Village 8900 people 155 km
Apoaja Oaxaca Mexico Village - 155 km
Cuilapan Oaxaca Mexico Village - 155 km
San Juan Bautista Suchitepec Oaxaca Mexico Village - 155 km
Tequixtepec Oaxaca Mexico Village - 156 km
Ejutla Oaxaca Mexico City - 156 km
La Esperanza Guerrero Mexico Village - 156 km
Huitzo Oaxaca Mexico Village 4700 people 156 km
San Lorenzo Cacaotepec Oaxaca Mexico Village - 157 km
Tepelmemec Oaxaca Mexico Village - 158 km
Azompa Oaxaca Mexico Village - 159 km
Colotepec Oaxaca Mexico Village - 159 km
Tecomatlán Puebla Mexico Village - 159 km
Petlalcingo Puebla Mexico Village - 159 km
Xicotlán Puebla Mexico Village - 160 km
Xoxocotlan Oaxaca Mexico Village 62000 people 160 km
Magdalena Oaxaca Mexico Village - 160 km
Etla Oaxaca Mexico Village 7300 people 161 km
Ixcamilpa Puebla Mexico Village - 161 km
Coyotepec Oaxaca Mexico Village 3100 people 162 km
San Baltasar Loxicha Oaxaca Mexico Village - 162 km
Oaxaca Oaxaca Mexico Major city 260000 people 163 km
Huapanapam Oaxaca Mexico Village - 163 km
Coatecas Altas Oaxaca Mexico Village - 163 km
Ocotlan Oaxaca Mexico Village 13000 people 164 km
Santa María Oaxaca Mexico Village - 166 km
San Felipe del Agua Oaxaca Mexico Village - 166 km
Chilapa Guerrero Mexico Village - 167 km
Agua Fría Oaxaca Mexico Village - 167 km
Xitla Oaxaca Mexico Village 3500 people 167 km
Azutla Puebla Mexico Village - 169 km
Ejido Nuevo Guerrero Mexico Village - 169 km
Tlalixtac Oaxaca Mexico Village 6500 people 170 km
Minas Oaxaca Mexico Village - 170 km
Cuixtla Oaxaca Mexico Village - 171 km
Ahuehuetitla Puebla Mexico Village - 172 km
Acatlán Puebla Mexico City 16000 people 172 km

see full list


Critical infrastructure

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

Airports

Intensity Name IATA Code Elevation (m) Usage Runway type IFR Runway Length (ft) Distance
Ta lo de Soto 149 0 31 km
Pinotepa Nacional PNO unknown 0 37 km
Tlaxiaco 2045 0 83 km
Chilpancingo 1280 Civ. Paved No 4400 174 km
Puerto Escondido PXM 88 Civ. Paved Yes 7500 146 km
Xoxocotlan OAX 1528 Civ. Paved Yes 8000 160 km
Alvarez International ACA 5 Civ. Paved Yes 10800 167 km
Pie de la Cuesta 6 0 193 km
Tehuacan TCN 1679 Civ. Paved No 5500 219 km
Cordoba 911 0 277 km

Ports

Intensity Name LOCODE Country Distance
Puerto Marques Mexico 179 km
Acapulco MXACA Mexico 183 km
Punta Escondida Mexico 148 km

Dams

Intensity Reservoir Dam Name River Year Distance
El Guineo Nexpa 1985 106 km
Yosocuta Huajuapan 1969 124 km

More information

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