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1985
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Information About

1985 Mexico City Earthquake





THE EVENT

On Thursday, September 19 , 1985 , Mexico City was struck by an earthquake of magnitude 8.1 on the Richter Scale , which resulted in a death toll estimated 9,000 and 30,000 people were injured, while leaving another 95,000 homeless. The rescue workers saved more than 4,000 lives. One hundred thousand housing units were destroyed, together with many government buildings. Up to USD $4 billion of damage was caused in three minutes. There was an additional magnitude 7.5 aftershock 36 hours later (the evening of Friday, September 20 ). USGS Earthquake Report the reason why so many people died was because Mexico is built on a soft sediment of mud, sand, and grass.

The Epicenter of the quake was in Michoacán .


LATER EFFECTS

In an effort to be better prepared for a future devastating earthquake, the Mexican government funded a state-of-the-art alert system that sends early-warning messages to Mexico City electronically from Sensor s located along coastal Fault Line s. In the event that seismic activity is detected, warning Siren s will sound, giving city residents up to a minute's warning that a quake is coming.