2011 Zumpango earthquake
USGS shake map for the Zumpango earthquake
|Date||19:47:26, 10 December 2011 (-06:00)|
|Depth||64.9 km (40.3 miles)|
|Countries or regions||Mexico|
|Max. intensity||VII (hard) Mercalli|
|Casualties||3 dead, 10 injured |
The 2011 Zumpango earthquake was a magnitude 6.5 Mw earthquake that affected several major cities in southern Mexico at 19:47 local time on Saturday, 10 December 2011 (01:47 UTC on 11 December). Its epicenter was located in the city Zumpango, Guerrero, roughly equidistant between the metropolitan areas of Mexico City and Acapulco. The quake was felt in Guerrero, Michoacán, Mexico State, Mexico City and Puebla.
Multiple deaths and injuries resulted from the earthquake, although the effects were minimized because the hypocenter was relatively deep at 65 kilometers. The resulting damage was minimal, but during the panic people evacuated buildings in Mexico City.
In Mexico City, a little more than 100 miles from the epicenter, high rise buildings swayed for more than one minute as a result of the seism. Damage was reported as light though a secondary toll highway between Acapulco and Mexico City was blocked in several places due to landslides. The shaking was also responsible for knocking out power to around 82,000 people, and disrupting cell phone service in the capital. In Acapulco, 87 miles from the epicenter, no injuries or damage were reported.
Several injuries and one death was reported after rocks were dislodged from a hill and tumbled onto the Autopista del Sol (Highway of the Sun) and into a truck. The other deaths were reported as one person killed during the collapse of a house's roof in Iguala, and another was listed in Ixcateopan de Cuauhtémoc with unknown circumstances.
An early report from the United States Geological Survey had the magnitude at 6.7 but it was later lowered to 6.5. According to the Secretary of the Interior there were four aftershocks within the first 45 minutes of the main shock. Also stated was that since this was a moderate event a large number of aftershocks were not expected. Seven of the aftershocks were close to the epicenter and two more were in the state of Chiapas.
Although the event occurred in the coastal state of Guerrero, no tsunami warning was given for the earthquake. The National Oceanic and Atmospheric Administration stated that based on the location, magnitude, and historical tsunami records, no advisory or warning would be necessary for the west coast of the United States, British Columbia, or Alaska.
- Ken Schwencke, Rong-Gong Lin II, and Shelby Grad (December 10, 2011). "6.7 earthquake rocks Mexico City; no tsunami warning for California". Los Angeles Times. Retrieved 2011-12-17.
- Mark Stevenson, Lisa Adams, Sergio Flores, and Michael Weissenstein (December 11, 2011). "Strong earthquake shakes buildings from Mexico City to Acapulco; 3 dead, but damage light". Associated Press. Retrieved 2011-12-11.
- CNN Wire Staff (December 11, 2011). "At least 2 killed in Mexico earthquake". CNN. Retrieved 2011-12-11.
- Kenya Ramirez & Francisco Pazos (December 10, 2011). "Sacude sismo de 6.8 grados al DF, reporta el Servicio Sismológico; no hay daños mayores". Excélsior. Retrieved 2011-12-11. (Spanish)
- Dirección General de Comunicación Social (December 10, 2011). "Sismo en Guerrero 6.8 Grados Richter". Secretary of the Interior (Mexico). Retrieved 2011-12-11. (Spanish)