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At 9PM on January 26, 1700 one of the world's largest earthquakes occurred along the west coast of North America. The undersea Cascadia thrust fault ruptured along a 680 mile length, from mid Vancouver Island to northern California in a great earthquake, producing tremendous shaking and a huge tsunami that swept across the Pacific. The Cascadia fault is the boundary between two of the Earth's tectonic plates: the smaller offshore Juan de Fuca plate that is sliding under the much larger North American plate. The earthquake also left unmistakable signatures in the geological record as the outer coastal regions subsided...

A rare and extreme tsunami ripped across an Alaska fjord three years ago after 180 million tons of mountain rock fell into the water, driving a devastating wave that stripped shorelines of trees and reached heights over 600 feet, a large team of scientists documented Thursday.The October 2015 cataclysm in Taan Fiord in Southeast Alaska appears to have been the fourth highest tsunami recorded in the past century, and its origins - tied to the retreat of a glacier - suggest it’s the kind of event we may see more of due to a warming climate..The new study even bluntly...

Scattered across the world’s oceans are a handful of rare geological time-bombs. Once unleashed they create an extraordinary phenomenon, a gigantic tidal wave, far bigger than any normal tsunami, able to cross oceans and ravage countries on the other side of the world. Only recently have scientists realised the next episode is likely to begin at the Canary Islands, off North Africa, where a wall of water will one day be created which will race across the entire Atlantic ocean at the speed of a jet airliner to devastate the east coast of the United States. America will have been...

Today is the 50th Anniversary of the Great Alaskan Earthquake. It struck at 5:36pm ADT on March 27, 1964. The moment magnitude was 9.2 on the Richter scale. There were 11 aftershocks on the day of the earthquake over 6.0, and 9 more over the next three weeks. The Earth "rang" like a bell for several weeks afterward. Vertical ground movements of 5 to 10 cm were detected in Texas and Florida.