<Tr> <Td> 1960 </Td> <Td> Valdivia, Chile, and Pacific Ocean </Td> <Td> 1960 Valdivia earthquake or Great Chilean earthquake </Td> <Td> Earthquake </Td> <Td> The magnitude - 9.5 earthquake of 22 May 1960, the largest earthquake ever recorded, generated one of the most destructive tsunamis of the 20th century . The tsunami spread across the Pacific Ocean, with waves measuring up to 25 meters high in places . The first tsunami wave struck at Hilo approximately 14.8 hrs after it originated off the coast of South Central Chile . The highest wave at Hilo Bay was measured at ~ 10.7 m (35 ft). 61 lives were lost, allegedly due to people's failure to heed warning sirens . Almost 22 hours after the quake, the waves hit the Sanriku coast of Japan, reaching up to 3 m above high tide, and killing 142 people . Up to 6,000 people died in total worldwide due to the earthquake and tsunami . </Td> </Tr> <Tr> <Td> 1963 </Td> <Td> Vajont Dam, Monte Toc, Italy </Td> <Td> Vajont Dam </Td> <Td> Landslide </Td> <Td> The Vajont Dam as seen from Longarone on 25 September 2012, showing the top 60--70 metres . The 200--250 - metre (656--820 - foot) megatsunami would have obscured virtually all of the sky in this picture . <P> The Vajont Dam was completed in 1961 under Monte Toc, 100 km north of Venice, Italy . At 262 metres (860 feet), it was one of the highest dams in the world . On October 9, 1963 an enormous landslide of about 260 million cubic metres of forest, earth, and rock, fell into the reservoir at up to 110 km per hour (68 mph). The resulting displacement of water caused 50 million cubic metres of water to overtop the dam in a 250 - metre (820 - foot) high megatsunami wave . The flooding destroyed the villages of Longarone, Pirago, Rivalta, Villanova and Faè, killing 1,450 people . Almost 2,000 people (some sources report 1,909) perished in total . </P> </Td> </Tr> <P> The Vajont Dam was completed in 1961 under Monte Toc, 100 km north of Venice, Italy . At 262 metres (860 feet), it was one of the highest dams in the world . On October 9, 1963 an enormous landslide of about 260 million cubic metres of forest, earth, and rock, fell into the reservoir at up to 110 km per hour (68 mph). The resulting displacement of water caused 50 million cubic metres of water to overtop the dam in a 250 - metre (820 - foot) high megatsunami wave . The flooding destroyed the villages of Longarone, Pirago, Rivalta, Villanova and Faè, killing 1,450 people . Almost 2,000 people (some sources report 1,909) perished in total . </P> <Tr> <Td> 1964 </Td> <Td> Niigata, Japan </Td> <Td> 1964 Niigata earthquake </Td> <Td> Earthquake </Td> <Td> 28 people died, and entire apartment buildings were destroyed by liquefaction . The subsequent tsunami destroyed the port of Niigata . </Td> </Tr>

Was there ever a tsunami in the united states