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Posted by Max - August 28, 2026

Glacier collapse triggered catastrophic Nepal flash floods that unleashed ‘tsunami from the sky’

A glacier collapse triggered this week’s catastrophic flash floods that killed more than 390 people and left more than 1,400 missing when it hit the Nepal-China border, unleashing what officials have described as a “tsunami from the sky.”

A chunk of ice snapped off a glacier high in the Himalayas around 8:40 a.m. Wednesday and fell from a height of around 17,000 feet, smashing into a valley floor, creating what is known as an ice avalanche, Al Jazeera reported.

As the ice was falling, it was picking up debris and it struck the Lhende River – located around 12 miles from the Nepal-China border.

The debris accumulation initially caused the river to be blocked up before the dam gave way, unleashing a violent torrent downstream.

Drone view of mud covering buildings and property after a flash flood in Trishuli, Nepal.
Buildings in the Nepalese district of Trishuli have been left covered in mud following this week’s flash floods.REUTERS

“It was such a huge amount of water. You can imagine it is 20 million cubic meters excess water on the river, and it was like a tsunami from the sky,” Bishal Nath Upreti, the president of the Nepal Centre for Disaster Management, told BBC’s “Today” show.

✓ Max

Glacier collapse triggered catastrophic Nepal flash floods that unleashed ‘tsunami from the sky’ A glacier collapse triggered this week’s catastrophic flash floods that killed more than 390 people…

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