Sep 7, 2026 · 24 min · 8 segments
On August 26th, 2026, a catastrophic flash flood tore through the Tibet–Nepal border region, destroying infrastructure, devastating communities and leaving more than a thousand people dead, with…
Neil O'SullivanHost
A large mass of glacial ice and rock detached from the mountainside at an altitude of around 50 to 100 metres above sea level.
That triggered an enormous ice and rock avalanche, which cascaded down the mountainside and into the river system below.
It was a cascading chain of hazards, ice, rock, mud and water combining into a rapidly moving debris flow.
The torrent gathered more material as it travelled downstream, eroding riverbanks and carrying enormous quantities of sediment with it.
At its fastest stages, estimates suggest the debris flow was travelling at an extraordinary speed.
One reconstruction suggests that the flood wave reached the border crossing only around seven and a half minutes after the initial collapse, while other estimates suggest a considerably longer interval.
We'll come back to that later because it raises an important question about how much warning could have been provided to people downstream.
The international crossing at the border is known on the Nepalese side as Rasu Wagadi and on the Chinese-controlled Tibetan side as Jirong Port.
When the flood arrived, CCTV captured the moment the wall of mud and water swept across the border facilities.
Buildings disappeared beneath the torrent, roads and bridges were destroyed, vehicles were swept away and the devastation continued downstream through Nepal.
Entire communities were wiped away, power infrastructure was damaged or destroyed, communications were cut, and bodies were subsequently recovered far downstream, some hundreds of kilometres from where the disaster began.
The latest reports put the number of confirmed dead in Nepal at more than 1,200, with thousands still missing.
On the Chinese-controlled Tibetan side, Chinese authorities report 21 deaths and 541 people missing.
The scale of destruction, the difficulty of the terrain, and the continuing rescue operations all make accurate casualty figures difficult to establish.
A large mass of glacial ice and rock detached from the mountainside at an altitude of around 50 to 100 metres above sea level.
That triggered an enormous ice and rock avalanche, which cascaded down the mountainside and into the river system below.
It was a cascading chain of hazards, ice, rock, mud and water combining into a rapidly moving debris flow.
The torrent gathered more material as it travelled downstream, eroding riverbanks and carrying enormous quantities of sediment with it.
At its fastest stages, estimates suggest the debris flow was travelling at an extraordinary speed.
One reconstruction suggests that the flood wave reached the border crossing only around seven and a half minutes after the initial collapse, while other estimates suggest a considerably longer interval.
We'll come back to that later because it raises an important question about how much warning could have been provided to people downstream.
The international crossing at the border is known on the Nepalese side as Rasu Wagadi and on the Chinese-controlled Tibetan side as Jirong Port.
When the flood arrived, CCTV captured the moment the wall of mud and water swept across the border facilities.
Buildings disappeared beneath the torrent, roads and bridges were destroyed, vehicles were swept away and the devastation continued downstream through Nepal.
Entire communities were wiped away, power infrastructure was damaged or destroyed, communications were cut, and bodies were subsequently recovered far downstream, some hundreds of kilometres from where the disaster began.
The latest reports put the number of confirmed dead in Nepal at more than 1,200, with thousands still missing.
On the Chinese-controlled Tibetan side, Chinese authorities report 21 deaths and 541 people missing.
The scale of destruction, the difficulty of the terrain, and the continuing rescue operations all make accurate casualty figures difficult to establish.
The rest of this transcript — segmented and speaker-labeled, so you land on the exact moment something was said
Search every transcript — by keyword, by phrase, or by meaning, across every show Radar indexes
Trends — what is surging across podcasts, measured against its own baseline
Alerts — when a name you follow appears in a newly indexed episode
No account is needed to search Radar.
