The Worlds biggest Tsunami that was 1720 feet tall, occured on March , 1958; in Alaska.
There was a Tsunami in Sumatra, that was caused by a 9.3 earthquake on December 26, 2004
Earth quake are release valves under the earth that relieves press that builds up under the earths crust.
Great Tsunami 12/26/04 @ Aceh, Sumatra, Indonesia 1 of 3
Great Tsunami @ Banda Aceh, Sumatera, Indonesia 2 of 3
Great Tsunami 12-26-04 at Banda Aceh, Sumatra, Indonesia 3 of 3
Documentary 2016 The Increasing Frequency of Earth's Natural Disasters - Tsunami
World's Biggest Tsunami - geology.com
Earthquakes and Tsunamis in Sumatra
"Hyperdimensional" Sumatra Earthquake Predicted In Advance
Tsunami! Sumatra 2004 - washington.edu
Small tsunami generated in Pacific after earthquake
Science Papua New Guinea earthquake causes 1-inch tsunami. No injuries reported.
The Northern California Coast is the most tsunami-prone area of the continental United States
Countdown to catastrophe: Earthquake in North America