The international community was scrambling to get aid into flood-stricken parts of Nepal and Tibet on Thursday as authorities warned that a lake ⁠formed at the ⁠site ⁠where the ​deadly torrents occurred ⁠was rising and ⁠at risk ​of ‌bursting.

The catastrophic flash floods that hit Nepal and Tibet on Wednesday, thundering down valleys and obliterating entire villages, killed at least 389 people and left more than 1,300 missing.