How Fast Did The 1946 Tsunami Travel?
How Fast Did The 1946 Tsunami Travel? Despite the destruction to the Aleutian Island Unimak, the tsunami had almost an imperceptible effect on the Alaskan mainland. Waves reportedly traveled across the ocean at 500 miles an hour and measured 55 feet high, crest to trough, according to the USGS. What was the biggest tsunami? 1958