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July 1958 Lituya Bay, USA Images

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: April 12, 2026 at 02:35 AM | Dataset Last Updated: February 01, 2012 at 12:00 AM
On July 10, 1958, at 06:15:59 UTC, a M 7.8 earthquake occurred in Southeast Alaska. At least 8 separate tsunamis, generated by submarine and subaerial landslides and ice falls, followed the earthquake. The epicenter was located on the northern coast of Cross Sound near Palma Bay. A local submarine slump off Khantaak Island in Yakutat Bay caused 3 deaths and wrecked a boat. Lituya Bay, the site of repeated huge local tsunamis, experienced a massive landslide which generated a surge of water reaching 525 meters in height -- 400 feet higher than the Empire State Building. Property damages, primarily from lost boats, exceeded $100,000.

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