A Himalayan Tsunami
The water rose nine meters in thirty minutes.
That is the scale of the catastrophe that struck Nepal’s Rasuwa district on August 26, 2026. A massive surge of water, sediment, and boulders tore down the Bhotekoshi River, sweeping through settlements, hydropower tunnels, and roads with a force that scientists are now calling a “Himalayan Tsunami”. The floodwaters reached heights of 20 to 30 meters and traveled at speeds of up to 180 kilometers per hour. There was no rain recorded locally. Residents had no warning.
As of September 1, the death toll has risen to more than 1000 people, with 3,916 still missing. Among the missing are 865 people from Rasuwa, 1,558 from Nuwakot, 933 workers associated with hydropower projects, and 583 foreign nationals. Over 11,800 people have been rescued. More than 21,000 security personnel have been deployed. Unidentified bodies are being stored in 21 hospitals across the country.
The 42-kilometer Betrawati–Rasuwagadhi road has sustained extensive damage. The Prithvi Highway remains blocked at Krishnabhir, where a 20-meter section of the road caved in due to undercut erosion from the surging Trishuli River. The Naubise-Malekhu section has collapsed at three separate places. Road connectivity to large parts of the country is severed.
But this story is not just about a flood. It is about a warning that was issued — and ignored.
The Warning That Came Five Months Early
In March 2026, five months before the Rasuwa flood, the International Centre for Integrated Mountain Development (ICIMOD) released two landmark reports: Changing Dynamics of Glaciers in the Hindu Kush Himalaya Region from 1990 to 2020 and HKH Glacier Outlook 2026: Insights from 50 Years of Himalayan Glacier Monitoring.
The findings were alarming.
ICIMOD reported that glaciers in the Hindu Kush Himalaya region had lost up to 27 meters of ice thickness since 1975. The region’s glaciers had lost approximately 12 percent of their total area and 9 percent of their estimated ice reserves between 1990 and 2020. Most critically, the rate of ice loss has doubled since 2000. The reports warned that at least 78 percent of the region’s glacier area located between 4,500 and 6,000 meters is highly exposed to elevation-dependent warming.
The reports explicitly warned that accelerating glacier melt was increasing the threat of glacial lake outburst floods (GLOFs) and other sudden glacier-related disasters. They raised alarms for the nearly two billion people downstream who depend on meltwater from the “Water Towers of Asia”. They warned that some parts of the Himalayan cryosphere could be approaching critical tipping points, beyond which glacier retreat may become irreversible.
ICIMOD researchers are now examining whether an ice-rock avalanche from a high-altitude area may have triggered the recent floods — a large mass of ice and rock debris falling into the Lende Khola, a tributary of the Bhotekoshi River. Mohd Farooq Azam, Senior Cryosphere Specialist at ICIMOD, explained that climate change is making such slopes more vulnerable: as snow cover decreases and glaciers retreat, more bare rock and land are exposed, absorbing more heat and destabilizing mountain slopes.
The warnings were clear. The science was settled. The disaster was predictable.
And yet, here we are.
Climate Justice: Nepal’s Fight for Accountability
Nepal contributes just 0.5 percent of global carbon emissions. Yet Nepal pays the heaviest price.
Foreign Minister Shisir Khanal has described the flood as a “direct consequence of global climate change”. In an interview with Kantipur TV, he stated: “Nepal’s greenhouse gas emissions are virtually negligible, and the country was paying the ultimate price for a global crisis the country did not create”.
Nepal’s Ministry of Finance has dispatched a formal climate compensation claim letter to international partners. The government has also sent an urgent request to the Fund for Responding to Loss and Damage — a global climate finance mechanism established at COP27.
Khanal said Nepal is shifting its diplomatic framework from “aid” to “justice and compensation.” “This is not a matter of charity; it is a matter of legal and moral liability”. He named the world’s top emitters — China, the United States, and India — as having a historical responsibility to compensate vulnerable nations like Nepal.
“If our Himalayan glaciers disappear, the water security of over two billion people in South Asia — dependent on rivers like the Ganges and the Trishuli — will be permanently compromised,” Khanal warned. “We are advocating not just for Nepal, but for the survival of South Asian civilization”.
The flood, he said, was “not a standard flood.” “This was a disaster of tornado-like velocity — what many are rightly calling a ‘Himalayan Tsunami.’ It is a scale of disaster that is entirely outside the living memory of Nepal”.
The $55 Million Question
In January 2026, just eight months before the flood, Nepal signed a landmark agreement with the LEAF Coalition — a global public-private initiative backed by more than 30 major companies and the governments of Norway, the United Kingdom, the United States, and South Korea.
The deal could bring up to $55 million in climate finance to Nepal. It made Nepal the first Asian country to access LEAF funding, rewarding decades of community-led forest conservation and emissions reductions. Under the deal, Nepal plans to make millions of tonnes of high-integrity emissions reductions credits available to LEAF buyers for the period from 2022 to 2026.
$55 million.
That is roughly 7.3 billion Nepali rupees.
The question that must be asked — and asked loudly — is this: Where is that money now?
With over 1,000 dead, nearly 4,000 missing, tens of thousands of homes damaged, schools destroyed, multi-billion-rupee hydropower projects ruined, and entire communities swept away, has any of the $55 million been directed toward rescue, relief, or rehabilitation for the Rasuwa flood victims?
The government has provided cash relief of NPR 10 million each to Rasuwa and Nuwakot, and NPR 5 million to Dhading — a total of NPR 25 million. An additional NPR 67.5 million has been allocated to 15 affected local governments. That is approximately NPR 92.5 million — roughly $700,000.
Against $55 million in climate finance secured just months earlier.
Where is the rest?
Nepal’s forests have expanded to over 46 percent of the country’s total land area. Community forestry has been a success story. But when the climate crisis — the very crisis these funds were meant to address — arrives in the form of a 30-meter wall of water, the victims deserve to know that the money meant to protect them is actually reaching them.
The LEAF Coalition deal was signed with the promise that “forest-dependent communities” would be paid for their roles in forest protection. But what about the communities that are no longer there? What about the families waiting outside 21 hospitals, hoping to identify the remains of their loved ones?
The Human Cost of Inaction
Behind every number is a story.
865 people missing from Rasuwa. Husbands, wives, children, grandparents.
933 hydropower workers unaccounted for. Many are feared trapped inside tunnels. Rescue operations are ongoing at the Chilime hydropower tunnel near Syabrubesi. Nepal Police Deputy Inspector General D Regmi said the tunnel is damaged and floodwaters have entered it. The rescue team is still determining exactly how many people remain trapped inside.
583 foreign nationals missing. Families from across the world are waiting, hoping, grieving.
25 Nepal Police personnel, 45 Nepal Army personnel, 13 Armed Police Force personnel. The men and women who rushed to save others, now counted among the missing.
The World Food Programme has dispatched 70.6 metric tons of food rations, reaching nearly 8,000 people with 15 days of assistance. But with roads blocked, helicopters remain the primary mode of rescue and supply delivery. The rugged Himalayan terrain has hampered ground operations. The government has conducted 411 aerial rescue flights so far.
And still, the bodies keep coming.
A Second Wave Looming
The nightmare may not be over.
ICIMOD has issued a fresh warning: a blockage remains lodged upstream near the Nepal-China border and could unleash a second surge of floodwaters.
Qianggong Zhang, Head of Climate and Environmental Risks at ICIMOD, stated: “The same site devastated by last year’s Rasuwa flood is once again under threat. An ice avalanche in the Lhende Khola is the suspected trigger, but the cause remains unconfirmed. With a blockage still lodged upstream on the Nepal-China border, authorities warn a second flood is imminent and evacuation orders are now in place for Jilong port”.
Scientists are investigating two hypotheses. The first is that a large ice-rock avalanche occurred high in the mountains, displacing massive quantities of water. The second is the formation of a temporary landslide dam — debris from the avalanche may have blocked the river at a narrow section upstream. Water accumulating behind such a blockage can create a dangerous natural dam. If the trapped water suddenly breaks through, it can generate a powerful secondary flood wave.
Areas further downstream in Nuwakot and Dhading are being monitored. Evacuation orders are in place.
How many more warnings must be issued before we act?
The Way Forward
The Rasuwa flood of 2026 is not an isolated tragedy. It is a preview of what is to come.
The Hindu Kush Himalaya contains the largest volume of ice outside the polar regions — over 63,700 glaciers covering more than 55,000 square kilometers. These glaciers feed 10 major river systems in Asia and are crucial for the food, water, energy, and livelihoods of billions of people.
The region is warming faster than any other part of the world.
ICIMOD’s warnings were not abstract. They were specific, data-driven, and urgent. The March 2026 reports warned that the region’s glaciers are approaching critical tipping points. They warned of glacial lake outburst floods. They warned of the risks to communities downstream.
Five months later, nearly 1,000 people are dead.
The government must answer the hard questions. Where is the $55 million from the LEAF Coalition? Why were the ICIMOD warnings not translated into actionable preparedness on the ground? What systems are in place to ensure that climate finance reaches the communities that need it most — especially when disaster strikes?
And the world must listen. Nepal did not cause this crisis. Nepal is bearing the brunt of a crisis created by others. When Foreign Minister Khanal says this is “a matter of civilisational survival”, he is not exaggerating. The disappearance of Himalayan glaciers would permanently compromise the water security of over two billion people.
This is not charity. This is justice.
A Final Word
“Thank you God for making me Argentine,” Messi wrote in his farewell letter.
In Nepal, we might say something different.
“Thank you God for making us Nepali — but why must we pay the price for a world that refuses to change?”
The Rasuwa flood is a tragedy of staggering proportions. But it is also a test. A test of whether Nepal’s government will be transparent about climate finance. A test of whether the international community will honour its commitments to climate justice. A test of whether we — as journalists, as citizens, as human beings — will demand accountability.
The water rose nine meters in thirty minutes.
The warnings were issued five months earlier.
The question is: will we finally listen?
