The Megatsunami that Hit Alaska Last Year Is the Second Highest in History. The Giant Wave Had Nearly 500 Meters

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A "megatsunami" created when part of a mountain in Alaska collapsed into the sea is the second highest ever recorded. It is a new warning about the risks posed by melting glaciers, say scientists quoted by the BBC.

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The second-highest tsunami in recorded history hit a fjord in Alaska in the summer of 2025. It could have killed thousands of people, as this fjord is often visited by cruise ships in the summer. On August 10, 2025, the second-highest tsunami in recorded history hit the world. In the Tracy Arm Fjord in southeastern Alaska, a huge wave crashed against the fjord's steep cliffs to a height of about 480 meters at 5:26 a.m. local time, or 4:26 p.m. F…