Does anybody remember the 1985 earthquake in Mexico City?

Just got done talking to a couple of my relatives who said that they survived the biqgest quake to ever hit mexico in 25 years. Aunt was going to work as usual with uncle during the morning of Sep, 19 in the heart of the city, while waiting at the stop light, a noise like a train coming from east, began to shake ground very violently, buildings immediatley fell, people began to scream, running across the streets, while not knowing what the hell was going on.