http://www.ranker.com/list/the-worst-tsunamis-in-history/drake-bird?page=3
There has been many severe Tsunamis in history
that has left mayhem in the places were they have struck.
According to the ranker website the worst Tsunami in history so
far was the 2004 Indian Ocean one that released close to 23,000
Hiroshima-type atomic bombs amount of energy from below the sea.
The 9.0 magnitude earthquake was the largest recorded in 40 years.
There were about 229,866 found dead and the wave had traveled as
much as 3,000 miles to Africa.
http://www.ranker.com/list/the-worst-tsunamis-in-history/drake-bird?page=3
The second largest Tsunami recorded was the 1908
Messina Earthquake/Tsunami that hit a city in the island of
Sicily. The Tsunami was 40 feet high and had an earthquake before
hand of a magnitude of 7.1. There was approximately 123,000 dead
found after days of searching for people.
http://content.time.com/time/specials/packages/article/0,28804,1953425_1953424_1953399,00.html
The third largest Tsunami was the 1755 Lisbon
disaster that contained not only a Tsunami, but a fire and an
earthquake as well. This earthquake had an epicenter in the
Atlantic Ocean about 200km of Cape St. Vincent in southern
Portugal and this earthquake was one of the deadliest ones in
history. The Tsunami engulfed the harbour and the cities being as
tall as 66 feet tall.
http://www.glogster.com/madglob/lisbon-tsunami-1755/g-6losp5crvjrd8ldkrg3i6a0