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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.
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.
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
29 Ιουλ 2021 · A powerful 8.2-magnitude earthquake struck off the southern coast of Alaska late Wednesday night, prompting a tsunami warning for parts of the state and a tsunami watch as far as Hawaii.
View the current status update. Initial research indicates that other communities and infrastructure in Prince William Sound may also be at risk of a measureable tsunami and dangerous currents, including Valdez, Cordova, Tatitlek and Chenega. At this time, there is no way to know when, if, or how much of the slope may fall into the water.
If the giant, slow-moving landslide were to suddenly collapse into the narrow fjord below, it would generate an extremely large tsunami because of the way the fjord's shape would amplify the wave.
The Alaska Earthquake Center, in partnership with the Alaska Division of Geological and Geophysical Surveys and the Alaska Division of Homeland Security and Emergency Management, evaluates and maps potential tsunami inundation of coastal communities using numerical modeling of tsunami wave dynamics.
