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April 1946 Unimak Island, USA Images

Published by NOAA National Centers for Environmental Information | National Oceanic and Atmospheric Administration, Department of Commerce | Catalog Last Checked: August 02, 2026 at 05:14 PM | Dataset Last Updated: February 01, 2012 at 12:00 AM
On April 1, 1946, at 12:29 [local time] a rather strong magnitude 8.6 earthquake occurred with source to the south of Unimak Island, causing one of the most destructive tsunamis in the Pacific Ocean.

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