September 19, 1985 Mexico City, Mexico
This earthquake of magnitude 8.1 score is considered one of the most devastating earthquakes of America. The number of dead was then 9,000 people and injured were 30,000 and 100,000 were left homeless.
Valdivia was a 9.5, not 9.6.
Also: Alaska, 1964: 9.2 and Kamchatka, Russia, 1952: 9.0.
Damn Earth.
BTW, the latest earthquake had a magnitude of 9 not 9.1.