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
Exposed Population: 1270000 people within 100km
Source: NEIC usc0008m6h
Inserted at: 02 Feb 2017 13:09 UTC


For more info on GDACS alert score click here.
  Earthquake Tsunami GDACS score
NEIC 1.6 1 1.6
usc0008m6h Scaled population (vector) Max wave scenario 0m  
  C1 earthquake Max wave realtime 0m  
  C2 earthquake      
  Country Vulnerability      
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 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 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.

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

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Affected populated places. Areas of interest

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see full list

Critical infrastructure

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


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Nuclear plants

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More information

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