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The tallest wave ever recorded was a local tsunami, triggered by an earthquake and rockfall, in Lituya Bay, Alaska on July 9, 1958. The wave crashed against the opposite shoreline and ran upslope to an elevation of 1720 feet, removing trees and vegetation the entire way.
22 Νοε 2020 · The event at Lituya Bay still stands as one of the tallest tsunami waves known to science. The photo above, taken in 1958 after the tsunami, shows the ring of damage around much of the bay. Evidence of the cataclysmic wave is still visible from space more than 60 years later.
“worst case” tsunami-inundation for both Karluk and Larsen Bay. The maximum predicted overland flow depth ranges from 5 to 10 m (17 to 33 ft) in Karluk and from 10 to 15 m (33
2021 July 29: Alaska Tsunami Event. On July 29, 2021, a magnitude 8.2 Mw Chignik earthquake hit the southeast of Perryville, Alaska, south of the Alaska Peninsula (55.325 N 157.841 W depth=32 km) at 06:15 Universal Time Coordinated (UTC) and generated a small tsunami.
This is the largest and most significant megatsunami in modern times; it forced a re-evaluation of large-wave events and the recognition of impact events, rockfalls, and landslides as causes of very large waves.
These have produced some of the largest tsunami waves recorded and, unlike earthquake-induced tsunamis, they can strike with no warning. The tsunami travel time maps for various historical events can be accessed here.
Tsunami Inundation Mapping. Coastal Alaska lives with the most serious tsunami risk in the United States. Historically, tsunamis generated by earthquakes in Alaska have caused damage and loss of life along Alaska coastlines, the West Coast of the contiguous United States and across the Pacific.
