9.5: Chile, on May 22, 1960 9.2: Prince William Sound, Alaska, on March 28, 1964
9.1: Off Northern Sumatra, on Dec. 26, 2004
9.0: Kamchatka, on Nov. 4, 1952
8.8: Off Ecuador, on Jan. 31, 1906
Source: U.S.G.S.
9.5: Chile, on May 22, 1960 9.2: Prince William Sound, Alaska, on March 28, 1964
9.1: Off Northern Sumatra, on Dec. 26, 2004
9.0: Kamchatka, on Nov. 4, 1952
8.8: Off Ecuador, on Jan. 31, 1906
Source: U.S.G.S.