At 2011 japan a tsunami was 15.2 miles at world biggest tsunami: The largest recorded tsunami with a wave 1720 feet tall in Bay,Alaska.
This is an area high seismic and volcanic activity from New Zealand, up thought Japan across to Alaska, and down the west coasts of North and South America.The earthquake causes a tsunami with 30 foot waves that damage several nuclear reactors in the area.It is the largest earthquake ever to hit Japan.9.0 Earthquake and subsequent tsunami.How far the wave surges inland above sea level of up to 128 feet 39 meters at city and traveled inland as far as 6 miles. 