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Environment & Climate

Glacier and mountain collapse triggers catastrophic Himalayan flooding in Nepal and Tibet

At least 390 people are dead and over 1,400 remain missing following a massive landslide and outburst about 30 miles north of Kathmandu.

Updated Aug 27, 2026 · 23:18 UTC1 reports

The short version

  • A massive bedrock and glacier collapse roughly 30 miles north of Kathmandu triggered severe flooding and mudslides across Nepal and neighboring Tibet.
  • At least 390 people have been confirmed dead, and over 1,400 remain missing as rescue teams navigate severe mud, destroyed roads, and damaged bridges.
  • International responses are underway, with China promising aid to Nepal and search efforts continuing for missing foreign nationals, including up to 90 affected Americans.
  • Scientists are assessing the event's precise causes, noting that warming temperatures, permafrost loss, and steep terrain increase vulnerabilities in the Himalayas.

Key facts

  • A massive collapse of bedrock and glacier ice about 30 miles north of Kathmandu triggered devastating flooding and mudslides in Nepal and Tibet.[PBS NewsHour]
  • At least 390 people died and more than 1,400 individuals remain missing following the disaster.[PBS NewsHour]
  • Nepalese officials reported that the torrent destroyed dozens of bridges and damaged approximately 25 miles of roads.[PBS NewsHour]
  • Nepal's military airlifted more than 100 people using helicopters, while ground personnel deployed search dogs through deep sludge.[PBS NewsHour]
  • Chinese authorities reported hundreds missing in Tibet, announced the formation of a new lake due to the deluge, and committed to sending aid to Nepal.[PBS NewsHour]
  • The U.S. State Department confirmed three American citizens were rescued, with up to 90 Americans potentially impacted by the disaster.[PBS NewsHour]

What remains uncertain

  • The exact contribution of climate change to this specific event remains unverified pending formal attribution studies, though scientists note general warming trends destabilize glaciers and permafrost.[PBS NewsHour]
  • The total number and fate of missing people, including hundreds of foreign nationals, remain unconfirmed as search and rescue operations persist in remote terrain.[PBS NewsHour]

Sources