A devastating flash flood along the Nepal-Tibet border has resulted in the confirmed deaths of over 150 people, with hundreds more currently unaccounted for. The BBC has visited a hospital in Kathmandu where anxious families are desperately awaiting news of their loved ones. The disaster was caused by a large-scale water surge, likely triggered by recent heavy rainfall and potentially glacial lake outburst floods. Search and rescue operations are underway, but hampered by challenging terrain and ongoing weather conditions. Authorities are struggling to assess the full extent of the damage and provide aid to affected communities. The situation remains critical as hopes diminish for those still missing.