Off-Nadir Delta

Ice-rock avalanche triggers deadly flood in Nepal's Bhotekoshi region, killing 1,457

Titles and summaries are AI-extracted from news reporting; every source is linked below. Event id affb1fc1-3c52-42f6-95e4-e2f00b46ebc4.

Where
Trishuli Riverresolved to block27.864, 85.112
When
Occurrence date not stated by reportingFirst reported 2026-09-24 · last update 2026-10-26
Sourcing
99 reports99 reports across 80 outlets · independence not established
How far this got
pinpointednamed facility unresolvedThis signal has no sensor recommendation, so there is nothing specific to look for.

Summary

On August 26, 2026, a mountain and glacier collapse near Nepal's border with China triggered a catastrophic flood in the Bhotekoshi region. The avalanche traveled approximately 20 km in 7 minutes, overwhelming warning and response systems. The disaster killed 1,457 people and left thousands missing across Nepal. Infrastructure including hydropower plants, bridges, hotels, roads, and villages was destroyed, with reconstruction costs estimated at approximately $1.81 billion. Over 70,000 people were left homeless, and survivors are in temporary shelters facing psychological trauma and uncertainty. The collapse was preceded by a mountain slope shift of up to 40 cm over 48 days, which satellite monitoring could have detected weeks in advance, though precise timing remained difficult to predict. Relief organizations including UNICEF, the World Food Programme, and the International Federation of Red Cross and Red Crescent Societies have provided emergency assistance, though long-term aid and international support for climate-vulnerable countries remain critical needs.

What imagery could confirm

Which satellite to use, what to look for and why. Part of the event detail on Pro.

What remains unresolved

  • named facility unresolved

Timeline

24 recorded change(s). The ledger starts when this event was first folded: the initial observation is not recorded as a change, so an empty timeline means nothing has moved since, not that nothing is known.

  • 2026-10-26member countour measurement98 → 99reports joined

3 more change(s) — the values are part of the event detail on paid plans. 20 change(s) before the history shown here.

Sources

Grouped by outlet. Syndication is not collapsed, so several outlets can carry one wire story — the count is breadth of carriage, not independent confirmation.

99 reports in all; the full list with the facts taken from each is part of the event detail on Pro.

Related events

0 related event(s) and 12 place(s) or facilities — the same facility, place, actor or campaign. Part of the event detail on Pro.

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