Alaska
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40 meters
The largest tsunami wave that struck Japan on March 11, 2011, reached a height of around 40 meters (131 feet). It was generated by a magnitude 9.0 earthquake off the coast of Tohoku.
The largest tsunami ever recorded occurred on July 9, 1958 in Lituya Bay, Alaska. The tsunami was triggered by a landslide that fell into the bay, generating a wave that reached a height of approximately 1,720 feet (524 meters).
The largest recorded tsunami wave reached a height of approximately 1720 feet (524 meters). It occurred in Lituya Bay, Alaska in 1958 as a result of a massive landslide into the bay.
The two most famous (current) tsunamis are the 2011 Tohoku tsunami in Japan and the 2004 Boxing Day (Sumatra) tsunami. The greatest historical tsunami (a series of them) accompanied the explosion of Krakatoa in August, 1883.