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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.
A total of five people were killed in the event: three people died on Khantaak Island at the mouth of Yakutat Bay when the beach they were standing on subsided 100 feet below sea level; the other two died when their boat was sunk by the tsunami at Lituya Bay.
22 Νοε 2020 · Some 2 square miles (4 square kilometers) of forest were sheared and swept away by the tsunami waves. One of the causes of the enormous waves in Lituya Bay was that an entire chunk of a mountain peak—estimated to be 2,400 feet by 3,000 feet by 300 feet—broke free from a cliff and dropped 2,000 feet.
17 Αυγ 2023 · Researchers have concluded there is a “rare but real risk” that an earthquake-produced tsunami could inundate parts of coastal Anchorage under certain conditions, a newspaper reported, a shift from the prior understanding of the risk posed to Alaska’s largest city.
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.
13 Ιουλ 2018 · Six years later, the magnitude 9.2 Great Alaska earthquake would trigger landslide tsunamis across southern Alaska, accounting for many of the deaths from that earthquake. Miller was not around to study these, as he had drowned on the Kiagna River with a young assistant in 1961.
Alaska, Earthquake and Tsunami, July 29, 2021. The magnitude 8.2 Mw Chignik earthquake, southeast of Perryville, Alaska (south of the Alaska Peninsula) (55.325 N 157.841 W depth=32 km) occurred at 06:15 UTC and generated a small tsunami.
