Why the Nepal flash flood was almost impossible to predict | About That

A collapsed glacier in Nepal caused catastrophic flooding that killed more than a thousand people, while thousands more are still missing. Andrew Chang breaks down what accelerated the flood to such a violent degree and how factors like the scale of the Himalayan mountains and the region's climate make prediction and monitoring so challenging.CORRECTION (September 3, 2026): The correct unit of measurement for the debris described going down the mountain slope at 2:39 is metres. (Photo credits: The Canadian Press, Reuters and Getty Images)