What was the most powerful tsunami ever?

Answer 1

The tallest tsunami ever recorded was at Lituya Bay, Alaska. July 7th, 1958, 1638 foot tall waves that were caused by a huge ice/rock fall. This is twice the size of the Eiffel Tower.

Further details: The highest naturally-occurring tsunami ever recorded occurred in Lituya Bay, a large inlet on the coast of Alaska. It is believed that an earthquake of either 7.9 or 8.3 on the Richter scale, occurred along a nearby faultline, part of the Pacific Rim of Fire. Around 40 million cubic yards of dirt and glacier were shaken loose from a mountainside at the head of the Bay, resulting in a tsunami (series of waves), the highest of which reached over 500 metres. Although the only witnesses to the event were a couple of fishing boats, the height was able to be determined by scientists finding the high water mark, where the water reached its highest point on the nearby land.

It was fortunate that the area was uninhabited, or else the effects could have been even more devastating. Higher tsunamis are believed to have occurred without human witnesses, so their heights have not been recorded.

Answer 2

You cannot define the strongest tsunami, since tsunami's are the result of earthquakes which have their own ranking. You can however rank the biggest tsunami's, the biggest tsunami ever recorded happened in 1958 in Lituya Bay, Alaska. The wave was approximately 1720 feet tall.

Answer 3

In Japan more than 1 million people died the waves were going very fast buildings were waved a away

Answer 4

The most powerful tsunami on record was on December 26. It damaged 14 countries and killed 230,000 people.