July 27, 1976, Tien Shan, China
This earthquake of magnitude 8.2 in the score is considered one of the largest by number of victims in the history of observations. Then the element has claimed more than 650,000 lives.
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.