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An earthquake generated the 7,200,000-cubic-metre (9,400,000 cu yd) Sledgehammer Point Rockslide, which fell from Mount Storm King in what is now Washington in the United States and entered waters at least 140 metres (459 ft) deep in Lake Crescent, generating a megatsunami with an estimated maximum run-up height of 82 to 104 metres (269 to 341 ft).
California is by no means the only part of the United States at risk for tsunamis. The entire West coast, from California to Oregon , Washington state and Alaska , faces significant hazards from ...
UTC time: 1946-04-01 12:29:01: ISC event: 898313: USGS-ANSSComCat: Local date: April 1, 1946 (): Local time: 02:29: Magnitude: 7.4 M s, 8.6 M w, 9.3 M t: Depth: 15 km (9.3 mi) [1] Epicenter: 1]: Type: Megathrust: Areas affected: Hawaii, Alaska United States: Max. intensity: MMI VI (Strong): Tsunami: Up to 42 m (138 ft) at Unimak Island: Casualties: 165–173 [2]: The 1946 Aleutian Islands ...
Lake Crescent, Washington, United States Landslide An earthquake generated the 7,200,000-cubic-metre (9,400,000 cu yd) Sledgehammer Point Rockslide, which fell from Mount Storm King and entered waters at least 140 metres (459 ft) deep, generating a megatsunami with an estimated maximum run-up height of 82 to 104 metres (269 to 341 ft).
And there was the catastrophic mega-tsunami of 1700, originating from a magnitude 9 earthquake over the Cascadia fault system, which runs offshore from Northern California to Vancouver Island for ...
Coastal areas in Northern California began evacuating residents after a 7.0 earthquake off Humboldt County's coast prompted a tsunami warning. Luckily, the worst didn't play out. But emergency ...
World's Biggest Tsunami: The largest recorded tsunami with a wave 1,720 feet (520 m) tall in Lituya Bay, Alaska; Photos of damage from the 1958 tsunami; Eyewitness reports of the tsunami; Video interview with survivors Howard and Sonny Ulrich (boat "Edrie"). "Mega-tsunami: Wave of Destruction". Air Date: BBC2, October 12, 2000.
The most important clue linking the tsunami in Japan and the earthquake in the Pacific Northwest comes from studies of tree rings (dendrochronology), which show that several "ghost forests" of red cedar trees in Oregon and Washington, killed by lowering of coastal forests into the tidal zone by the earthquake, have outermost growth rings that formed in 1699, the last growing season before the ...