The border crossing between Nepal and China has been hit by a flash flood, hundreds of people are missing.
Likely that a glacier broke and released a sudden deluge into the valley. ABC have a video of the scene taken on CCTV, but be warned it's very confronting.
They've setup a page for live updates...
https://www.abc.net.au/news/2026-08-27/nepal-flooding-live-updates-australians-missing/107082946