Earthquakes below magnitude 7.5 seldom cause tsunamis. The panel predicts Iwate to be worst-hit with tsunami of 29.7 metres, followed by Hokkaido wit 27.9 metres. The 9/11 tragedy was definitely the worst. 1. Indian Ocean Tsunami – The earthquake that caused the infamous Indian Ocean tsunami of 2004 registered a 9.1 in magnitude and was said to have the energy of 23,000 atomic bombs. Etna in Sicily. For example, on March 11, 2011, Japan was struck by a magnitude 9.0 earthquake that was centered in the ocean 80 miles (130 km) east of the city of Sendai. 4 Worst ever Tsunamis of the world April 5, 2013 11:52 AM | Skymet Weather Team Tsunamis, as deadly as they are, are difficult to predict and detect because they have a small wave height offshore, and a very long wavelength and it is for this reason they can pass unnoticed at sea, forming only a slight swell usually above the normal sea surface. Tsunamis occur when the body of water experiences a displacement of water due to earthquakes, volcanic eruptions, or underwater explosion. 5 Worst Tsunamis in Modern History. There are several worst tsunamis in different part of world, but the most often ones are always in Japan. It also resulted in a huge increase in government intrusion into the privacy of its citizens. The 10 Worst Tsunamis in History. Description: A massive, magnitude 9.5 earthquake off the coast of Chile caused a 1.2 metre wave in Tofino which ran up along the coast of Vancouver Island.

This tsunami propagated after an estimated magnitude 7.6 earthquake occurred off the coast of Sanriku, Japan. Tsunami flooding then continues to cause damage for several more weeks. A magnitude 9.5 earthquake in Chile on May 22, 1960, is the largest quake in recorded history. The tsunami was reported at Shirahama to have reached a height of 38.2 m, causing damage to more than 11,000 homes and killing some 22,000 people. The effects of a tsunami are devastating. Tsunami damage is first caused by the immense force of the tidal wave hitting the shoreline. The panel looked at simulation based on analysis of tsunamis of past 6000 years and covered seven prefectures including Hokkaido, Iwate, Miyagi, Fukushima, Ibarak, Aomori and Chiba. To the rest of Canada, if it makes you feel any better, here are some of the worst weather disasters in BC’s history. These are the five worst tsunamis in modern history. The smoking gun is the still-rumbling Mt. The largest-known quake in the United States struck Prince William Sound, Alaska, on March 28, 1964, and measured magnitude 9.2. They are one of the world's worst natural disasters that can hit a country. The earthquake was so large that it triggered a massive tsunami that devastated Sendai and the surrounding area.

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