1 May 22, 1960 Valdivia, Chile 1960 Valdivia earthquake 9.5
2 March 27, 1964 Prince William Sound, USA 1964 Alaska earthquake 9.4
3 December 26, 2004 Sumatra, Indonesia 2004 Indian Ocean earthquake 9.2
4 November 4, 1952 Kamchatka, Russia (then USSR) Kamchatka earthquakes 9.0 [1]
5 August 13, 1868 Arica, Chile (then Peru) 1868 Arica earthquake 9.0 [2]
6 January 26, 1700 Cascadia subduction zone, Canada and USA 1700 Cascadia earthquake 9.0