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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.
5 Οκτ 2020 · If a landslide occurs, the resulting tsunami in Barry Arm could produce waves that are hundreds of feet high. Other, more distant bays—such as the more heavily populated Passage Canal (about 30 miles/50 kilometers away)—could see 30-foot (9-meter) waves.
In partnership with the Alaska Earthquake Center and the Alaska Division of Homeland Security and Emergency Management, we publish maps of potential inundation made using numerical modeling of tsunami wave dynamics.
Damage from the 1958 Lituya Bay megatsunami can be seen in this oblique aerial photograph of Lituya Bay, Alaska as the lighter areas at the shore where trees have been stripped away. The red arrow shows the location of the landslide, and the yellow arrow shows the location of the high point of the wave sweeping over the headland.
Map Sheets. Sheet 1: Maximum estimated tsunami inundation, Karluk, Alaska. Sheet 2: Maximum estimated tsunami inundation, Larsen Bay, Alaska. Figures. Figure 1. Map of Southcentral Alaska showing the location of Kodiak Island and the rupture zones