The<a href="https://nepalitimes.com/news/rasuwa-flood-likely-a-glof"> flood on the Bhote Kosi</a> on Tuesday morning was a timely reminder about the risks Himalayan communities face from melting permafrost and glaciers, as well as the need for transboundary early warning. In the spring of 2024, I visited the Kanchenjunga Conservation Area (KCA) again. While in the village of Kampuchen (4,145) I visited Nupu Sherpa, friend and owner of the Kampuchen White House Lodge, to share <a href="https://tc.copernicus.org/articles/18/711/2024/">a new paper we had just published</a> about a massive ice-debris avalanche that had occurred in 2022 in the upper Nupchu valley. Although Nupu was interested in the results and implications of the avalanche, he was even more concerned about the recent and rapid development of several large, pro-glacial lakes upon the terminus of the Kanchenjunga glacier, an hour walk north of Kampuchen and across the seasonal yak pasture of Ramdang Kharka (4,375m).&nbsp; Like many high altitude, low gradient glaciers in the Himalaya, those in the Kanchenjunga region had shrunk to mere shadows of their former selves during the previous 125 years, leaving behind debris-covered remnant ice and small meltwater ponds.&nbsp; Nupu’s fear was that the lakes might soon coalesce to form a large and potentially dangerous glacial lake. Given a large enough trigger, such as a massive landslide or avalanche, a glacial lake outburst flood (GLOF) could result that could damage Kampuchen, Ghunsa, Phale, the Kangchenjunga Base Camp trail, and even beyond to the lower Tamor into India.&nbsp;  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/2025071204070_31e28d1fd0f5a976ad96fc5597cc386586d7de5b7d9714835d5b479104209fed.jpg" data-media-id="editor_2" data-image-id="2025071204070_31e28d1fd0f5a976ad96fc5597cc386586d7de5b7d9714835d5b479104209fed" data-rendition-name="original" width="1500" height="1635" loading="lazy" alt="Meltpools in the Himalaya"> <figcaption>The Kanchenjunga Conservation Area (KCA), eastern Nepal.</figcaption> </figure>  Since I was on my way to the village of Lhonak (4,792m) I stopped to take a look at the new lakes. Sure enough, from a lookout point on the lateral moraine of the Kanchenjunga Glacier I could see as many as ten newly formed and growing meltwater ponds upon the terminal moraine region of the glacier.&nbsp; The prospect was reminiscent of early satellite images taken of Imja Glacier in 1962 by the French, showing a number of meltwater ponds that within 15 years had grown and merged into a glacial lake half a square kilometer in size and containing 45 million cubic meters of water. Ten years after that Imja had grown to more than a square kilometer in size, was at least 120 m deep, and contained an estimated, and growing, 90 million cubic meters of water. Would the same scenario play out for the lower Kanchenjunga Glacier? To try and understand the situation better, glaciologist Sonam Wangchuk of ICIMOD put together a time series composite of lake development over time, from 2016 to 2024, where it was clear that the majority of the new lakes had only formed since 2019.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/2025071204078_c65a5ec574a251489c502f3efdf842033e0d238fd57947f7eee2c5793aac2a29.jpg" data-media-id="editor_3" data-image-id="2025071204078_c65a5ec574a251489c502f3efdf842033e0d238fd57947f7eee2c5793aac2a29" data-rendition-name="original" width="602" height="686" loading="lazy" alt="Meltpools in the Himalaya"> <figcaption>Time-lapse satellite images of glacial lake development from 2016 to present. Animation of the process can be seen at https://www.mdpi.com/article/10.3390/w17101457/s1.</figcaption> </figure>  Sonam Rinzin of Newcastle University estimated the potential depth and volume of the future glacier lake using standard procedures based upon the surface slope of the Kanchenjunga Glacier combined with volume-area curves for similar glacial lakes, estimating that the future lake would have a volume of approximately 33 million cubic meters of water and depth of more than 116 m. Other modeling methods enabled the mapping of probable ice, debris, and/or rock avalanches into the lake that could trigger a GLOF.&nbsp; A third model was then used to simulate four different avalanche scenarios that could trigger a GLOF: from small (debris avalanche of 3 million cubic meters) to the worst case (15 million cubic meters) of fast-moving debris. Even under the small magnitude scenario, avalanche-triggered outburst floods would travel distances of almost 120km downstream, and under the worst-case scenario the floods would reach the Indo-Gangetic Plain and cross the border into India, damaging or destroying up to 90 buildings and 44 bridges. The prospective triggers of a future GLOF, however, are not limited to a nearby rock avalanche. A <a href="https://tc.copernicus.org/articles/11/443/2017/tc-11-443-2017.html">sudden release of water</a> from water-filled caves further up the glacier could trigger a surge wave capable of breaching the terminal moraine complex holding in the lake water.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250712040716_20ed87368a9ac416b5d0232cf8e02211195ca6bc9fff960a1f7e43a95bdfbbf9.jpg" data-media-id="editor_5" data-image-id="20250712040716_20ed87368a9ac416b5d0232cf8e02211195ca6bc9fff960a1f7e43a95bdfbbf9" data-rendition-name="original" width="1500" height="1621" loading="lazy" alt="Meltpools"> <figcaption>Theoretical Kangchenjunga glacial lake of the future (blue) contained by a front moraine (purple) with a flood possibly triggered by a massive rock avalanche (red).</figcaption> </figure>  <a href="https://nepalitimes.com/multimedia/the-not-so-permanent-frost">Weakening permafrost</a> at the highest altitudes could result in massive ice-debris avalanches, such as those believed to have triggered recent and catastrophic floods in the <a href="https://nepalitimes.com/here-now/remembering-the-seti-disaster">Seti River</a>, <a href="https://nepalitimes.com/here-now/nepal-s-mountains-are-melting">Barun Khola</a>, <a href="https://nepalitimes.com/news/non-climate-cause-of-nanda-devi-flood">Chamoli</a>, <a href="https://nepalitimes.com/news/sikkim-flood-is-warning-to-nepal">South Lhonak lake</a>, and Tuesday’s Bhote Kosi flood in <a href="https://nepalitimes.com/news/rasuwa-flood-likely-a-glof">Rasuwa</a>. Weakening and eventual collapse of the terminal moraine complex through sub-surface piping could also result in an outburst flood. And a range of <a href="https://nepalitimes.com/here-now/nepal-s-mountains-are-melting">cascading processes</a> currently unknown to scientists could trigger a flood as well.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250712040712_76336a4597c08dd735e57b09ae9840b6bd3d89c85907bb39424d9e6f3163581e.jpg" data-media-id="editor_13" data-image-id="20250712040712_76336a4597c08dd735e57b09ae9840b6bd3d89c85907bb39424d9e6f3163581e" data-rendition-name="original" width="740" height="565" loading="lazy" alt="Meltpools in the Himalaya"> <figcaption>Jannu glacier in 1899. Note how the level of the debris-covered glacier reached the top of the lateral moraines over a hundred years ago. Photo: V. SELLA</figcaption> </figure>   <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250712040712_707dd365923a002e889c64a88796b445695ea9ca692ec639179bc70217ed63c5.jpg" data-media-id="editor_14" data-image-id="20250712040712_707dd365923a002e889c64a88796b445695ea9ca692ec639179bc70217ed63c5" data-rendition-name="original" width="5184" height="3888" loading="lazy" alt="Meltpools in the Himalaya"> <figcaption>Jannu glacier in 2022. The remaining debris-covered glacier is now several hundred meters below the crests of the lateral moraines. Photo: E. BYERS</figcaption> </figure>  But will a large and potentially dangerous glacial actually form at the Kanchenjunga glacier? There’s really no way to tell at this point, although the rapid development of lakes since 2016 is a strong indicator that a large lake is in the process of forming. And rather than wait and see, our current uncertainty does not diminish the need for a more proactive approach to the development of a large glacial lake at some point in the near future. For example, the lower Kanchenjunga Glacier clearly needs to be regularly monitored over the coming years to keep track of glacial lake growth and potential hazards. This could be done by the Department of Hydrology and Meteorology (DHM), ICIMOD, or Kathmandu University with results regularly shared with local people and local governments.&nbsp; In fact, such a service could be developed into a program that is offered to other communities throughout highland Nepal who experience similar situations of glacial lake development, growth, and prospective danger, especially since most communities presently feel that they have no one to turn to for similar information. Inexpensive, locally appropriate, user-friendly early warning systems (EWS) need to be developed for the Kanchenjunga region now, instead of waiting for a tragedy to happen. While the different options and costs are being assessed, the installation of new cell towers in the upper Ghunsa Khola would assure that local residents have access to one of the most effective and proven EWS systems available: cell phones, combined with a lake level monitoring device that broadcasts data and connects to cell phone alarm systems.&nbsp; For example, hundreds of lives were saved when upstream witnesses called their family and friends downstream to warn them of the <a href="https://archive.nepalitimes.com/article/nation/Anatom-of-a-Himalayan-tsunami,1330">Seti River flood</a> near Pokhara in 2014. New zoning policies that prohibit the construction of lodges and other infrastructure in high-risk floodplain regions need to be developed now. Where the infrastructure already exists, villages should be encouraged to install gabion rock-filled wire cages along susceptible river channel or river interfaces to divert the flow of water during a flood event, a method used successfully in both highland and riverine Nepal. Local and national hazard training and response programs need to be developed now. Several examples of excellent programs developed by different organisations in the upper Khumbu region exist that provide excellent models, such as those tested by the US Agency for International Development <a href="https://www.hillarymedal.com/Khumbu-Nepal-Local-Adaptation-Plan-of-Action-%20report.pdf">(USAID) and ICIMOD</a> between 2011 and 2015. Glacial lake reduction&nbsp; Nepal was recently awarded a $36.1 million award by the Green Climate Fund (GCF) to directly confront many of hazards from glacial lake outburst floods jointly implemented by the United Nations Development Programme (UNDP) and the DHM building on past successes at Tso Rolpa and Imja Lakes. There are some lessons learned over the past decades of field work based in Nepal and Peru: 1. The DHM wants to use the project to reduce GLOF risks in Kosi and Gandaki basins and glacial lake reduction programs are planned for Thulagi, Lower Barun, Lumding Tsho, and Hongu 2 glacial lakes.&nbsp; However, the planned lowering depth for Tso Rolpa in 2000 was 20m, with the project ending once 3m lowering was achieved due to lack of funds. Imja lake, which scientists also determined needed to be lowered by at least 20m, was in fact lowered by 3m in 2016 ‘because that’s what they did at Tso Rolpa’.&nbsp; If glacial lake reduction programs are to be implemented under the GCF program they should be based upon good science, and lowered to an effective depth, otherwise the activity will be a waste of funds. <a href="https://sinia.minam.gob.pe/sites/default/files/siar-%20ancash/archivos/public/docs/usaid_glacial_lake_handbookrfs_0-ilovepdf-%20compressed_0.pdf">Peru offers experience</a> for glacial lake lowering. 2. Although large glacial lakes (more than 1sq km) will always command the most media and even scientific attention, it has become abundantly clear in recent years that even small glacial lakes can be just as deadly, given the correct sequence of cascading events, rainfall, snowmelt, and/or other triggers.&nbsp; The 2017 <a href="https://link.springer.com/article/10.1007/s10346-018-1079-9">Barun flood</a> and September 2024 <a href="https://www.stimson.org/event/the-%20thame-glof-disaster-climate-related-disaster-risk-management-in-the-high-himalayas/">Thame flood</a> are two excellent examples. Methods for assessing the flood risk of glacial lakes will need to be revised accordingly to include many of these smaller glacial lakes as well, in addition to the 21 large lakes already considered to be dangerous. 3. Existing and expensive EWS might benefit by some consideration of cheaper, more local, and possibly more effective alternatives. In 2015, for example, <a href="https://digitalcommons.macalester.edu/himalaya/vol37/iss2/7/">villagers</a> living below Tso Rolpa complained that they had no idea how the recently installed EWS worked, what it sounded like, and what to do in the event that it went off. With improved cell service and real-time lake level monitoring apps, local people could check on the lake whenever they wished, as opposed to waiting for some kind of communication from Kathmandu. 4. The GCF grant has the opportunity to become the ‘go to’ place for communities throughout highland Nepal to report any of their concerns related to glacial lakes and/or other observed cryospheric processes. This service could facilitate local people’s ability to adapt to, mitigate, or prevent a range of climate change-related hazards largely unknown to previous generations. Alton C Byers is a faculty research scientist at the Institute of Arctic and Alpine Research (INSTAAR) University of Colorado at Boulder and has visited the KCA including a six-month residency in Ghunsa supported by the Fulbright Nepal Scholar Program. This article is largely based on Evolution of a Potentially Dangerous Glacial Lake on the Kanchenjunga Glacier, Nepal, Predictive Flood Models, and Prospective Community Response. <a href="https://doi.org/10.3390/w17101457">Water</a>, 2025. (Byers AC, Rinzin S, Byers E, Wangchuk S.)

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Meltpools in the Himalaya

<a href="https://nepalitimes.com/banner/including-local-knowledge-to-study-climate-change">Alton Byers</a> has organised frequent research expeditions to the Himalaya for more than 50 years. Recently, he returned to the <a href="https://nepalitimes.com/banner/tracing-past-glacial-floods-in-kangchenjunga">Kanchenjunga region</a> which he has visited three times since 2019. His team was there to gather more data for an ongoing study of glacial, ecological and socioeconomic changes in the region. But, his attention was soon diverted when a young man from the local community told Byers that locals had noticed large meltwater ponds forming at the toe of the <a href="https://nepalitimes.com/here-now/saving-kangchenjunga">Kanchenjunga</a> Glacier, upstream from Ghunsa and Kambachen. “He asked if we could go take a look at it,” Byers said. “We were on our way up to the Kanchenjunga base camp, so we made a detour. Sure enough, you could see these considerable lakes, perhaps a half-a-square-mile and growing.” Byers sprung into action. First, he interviewed other community members about the ponds — they confirmed the observations and growing concern. Then, over the ensuing months, he assembled a team of experts to conduct a study of how the ponds were changing. <a href="https://www.mdpi.com/2073-4441/17/10/1457#:~:text=This%20study's%20modeling%20results%20suggest,Ghunsa%20in%20the%20form%20of">The study was published in the journal Water earlier this month</a>. The paper outlines a number of potentially dangerous flood scenarios that could be triggered at the site in the future. The researchers urge regional authorities to implement mitigation measures, including a monitoring program and an early warning system for flooding.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250708030756_e4eda873993e7aa17a2e90dc95a162c85e4dc4627f6251ee8a9543681e3367b3.png" data-media-id="editor_4" data-image-id="20250708030756_e4eda873993e7aa17a2e90dc95a162c85e4dc4627f6251ee8a9543681e3367b3" data-rendition-name="original" width="1967" height="2128" loading="lazy" alt="Mapping Kangchenjunga glacial flood risk"> <figcaption>Predicted future Kanchenjunga proglacial lake extent and depth, frontal moraine, and potential avalanche location, which were used as input for modeling the GLOF cascade in r.avaflow. The background image is from Google Earth Imagery taken on 25 December 2020.</figcaption> </figure>  Byers’ first call for collaboration was to <a href="ttps://www.icimod.org/team/sonam-wangchuk/">Sonam Wangchuk</a>, an expert in snow and ice research via satellite imagery at the International Centre for Integrated Mountain Development. The images were striking. From 2022 to 2024, the ponds grew from puddles to large, interconnected bodies of water.&nbsp;  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250708030740_d60cec33fe26074cb49a6a7c4d8f42ef8870c63f606c945d60fc3bf0327b1a3b.png" data-media-id="editor_6" data-image-id="20250708030740_d60cec33fe26074cb49a6a7c4d8f42ef8870c63f606c945d60fc3bf0327b1a3b" data-rendition-name="original" width="1861" height="2126" loading="lazy" alt="Mapping Kangchenjunga glacial flood risk"> <figcaption>Evolution of supraglacial lakes on debris-covered glacier (27.7726, 88.0187) at Kanchenjunga. Time series satellite composite images were acquired by Sentinel-2 Multispectral Instrument between September and October, with the exception of the April–May 2024 images. Two large and distinct lakes which expanded rapidly in 2022 and continued to grow in 2023 and 2024 are labeled as 1 and 2, for locational comparison with the oblique view taken on 25 May 2024. Photo: ALTON BYERS</figcaption> </figure>  “It’s sort of an indicator of how these melting processes are accelerating,” Byers said. Next, Byers and collaborators estimated that the meltwater ponds could form a large glacial lake. That lake, if it forms, will be vulnerable to <a href="https://nepalitimes.com/here-now/nepal-s-mountains-are-melting">outburst flooding</a>, which could be triggered by melting processes, structural collapse or rockfall from surrounding slopes. Finally, the researchers focused their efforts on modeling potential floods. They identified four scenarios, from small to large.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250708030744_ecafcf2013548954fcd0c76ce9ab299d68222fae99892d168dcba70f0fd802ae.png" data-media-id="editor_8" data-image-id="20250708030744_ecafcf2013548954fcd0c76ce9ab299d68222fae99892d168dcba70f0fd802ae" data-rendition-name="original" width="2637" height="3197" loading="lazy" alt="Mapping Kangchenjunga glacial flood risk"> <figcaption>Flood extent under various scenarios: areas impacted by all four GLOF scenarios are labelled as 4, those affected by three scenarios as 3, by two scenarios as 2, and by only one scenario as 1. (B) Hydrograph generated from GLOF modeling in r.avaflow and used as the input flow data for modeling each GLOF scenario in HEC-RAS. Flow depth and velocity at Kampachen (C,D) and Ghunsa (E,F). Discharge rate and time of peak, and flow arrival at Kampachen (G) and Ghunsa (H) under different scenarios.</figcaption> </figure>  Under the mildest scenario, the flood surge would travel 100km down the Tamor River, and under the worst-case scenario it would travel at least 220km with impact on houses and bridges, livestock, crops and tourism infrastructure. Byers warns that without adequate preparation, glacial outburst flooding can be deadly. The paper advises local and regional authorities to take measures to prevent a flood originating from the study site. Their recommendations include establishing early warning systems for flooding, partnering with research organisations in Kathmandu to monitor the site and adapting zoning laws to prevent new buildings in flood zones.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250708030748_dccee85332d2844413dc5693050899b4bc49a25f9c66abc6b1ac1f5a80786d58.jpg" data-media-id="editor_9" data-image-id="20250708030748_dccee85332d2844413dc5693050899b4bc49a25f9c66abc6b1ac1f5a80786d58" data-rendition-name="original" width="1356" height="668" loading="lazy" alt="Mapping Kangchenjunga glacial flood risk"> <figcaption>Imja Lake, a glacial lake in the Mount Everest region of Nepal, began as meltwater ponds in 1962 and now contains 90 million cubic meters of water. Its water level was lowered to protect downstream communities. Photo: ALTON BYERS</figcaption> </figure>  Read also: <a href="https://nepalitimes.com/multimedia/the-not-so-permanent-frost">The not-so-permanent frost</a>, Wilfried Haeberli and C Alton Byers One of the cheapest and most effective early warning systems is deceptively simple: cell phones. Says Byers: “Not everyone can afford multi-million dollar early warning systems that rely on laser readings of water depth. But, studies have shown that cell phones, at least during the daytime, are one of the better early warning systems out there.” Byers hopes the study can help the same people that brought the issue to his attention: “The goal was always to share the research with the local community. Then they have all of the information they need to make the best decisions possible.” <a href="https://www.colorado.edu/instaar/2025/05/27/researchers-model-dangerous-glacial-lake-himalayas-and-propose-solutions">Gabe Allen</a> is Senior communications specialist at the Institute of Arctic and Alpine Research at the University of Colorado Boulder.

Mapping Kangchenjunga glacial flood risk

On the afternoon of 28 May, a massive glacier avalanche destroyed the idyllic village of Blatten in the Valais region of Switzerland. Footage of the disaster rapidly circulated around the world, sparking renewed conversation about the increasing instability of the mountain cryosphere and climate-related risks. The population of nearly 300 people had been evacuated a week prior due to concerns that unstable slopes above the glacier could trigger a catastrophic event. This is remarkable, and a testament to the value of hazard monitoring and anticipatory action. Shocked by the intensity of avalanche impacts and devastating loss, people struggled to comprehend the alternative: what if the village had been full? In Nepal, the people of the Langtang Valley, survivors of a massive glacier avalanche that killed over 300 people in April 2015, know exactly what it feels like for an entire village to be <a href="https://www.theguardian.com/world/2015/may/17/nepal-earthquake-langtang-village-everyone-was-dead">‘wiped off the map’</a> in a little more than a minute. The avalanche that buried the village of Langtang was similarly catastrophic, as the avalanche fell over 3,000m and <a href="https://www.nytimes.com/2015/12/19/world/asia/nepal-avalanche-langtang.html">carried nearly as much force as the Hiroshima atomic bomb</a>. Unfortunately, the people of Langtang had no warning. While these two disasters are quite different, there are some important connections between them. As the world contemplates the threat of increasing climate-related glacier hazards and wonders if and how Blatten will rebuild, I would like to draw attention to the ever-present risk of similar disasters in the Himalayas, where the scale of the problem is (arguably) larger and resources are (inarguably) more limited. As events like these become increasingly common, we need to build monitoring and <a href="https://www.undrr.org/implementing-sendai-framework/sendai-framework-action/early-warnings-for-all">early warning systems for all</a> at-risk communities. We also need more comparative analysis of the ways mountain people make sense of climate-related risks, particularly around wicked questions like hazard zoning and resettlement or relocation. How do institutions determine where to invest in hazard monitoring and early warning systems? Who gets to decide where people can rebuild, what kind of risks are ‘acceptable’, or whose uncertainties matter? As a survivor of the Langtang disaster and an applied anthropologist, this is not a thought exercise for me. I spent more than two years working with the Langtangpa community as a volunteer, and the last ten years conducting research focused on the aftermath of the Langtang avalanche and the ways people cope with disaster and climate risk in the Himalayan region. Since late 2022, I have been <a href="https://www.stimson.org/project/early-warning-systems-for-cascading-disasters-in-nepal/">working with the Stimson Center </a>to consider how we might build systems to assess and monitor the changing risks of cascading hazards in the Himalayan region. As the Swiss and a range of international organizations consider how they might provide warning for other Alpine villages living beneath glaciers, we need to expand the conversation to consider the many Himalayan villages that are similarly at-risk. The question of climate causality currently haunts the Blatten disaster -- just as it has for other similar events in recent years, including the Langtang avalanche. While attribution is incredibly complicated, many scientists have already highlighted the ways that melting permafrost and loss of seasonal snowcover and glacial mass created instability in the overall system above the Birch Glacier on Kleines Nesthorn. Not all glaciers are receding. In Blatten, recurring slope failures had also been piling debris on the glacier slowly over the years, pushing the ‘glacier tongue’ forward and weakening its integrity – and this acceleration attracted attention and focused monitoring. <a href="https://www.linkedin.com/feed/update/urn:li:activity:7334623807573278721/">A recent post from Christian Huggel, a leading cryosphere scientist based at University of Zurich</a> examined these details and clearly stated: “Considering all these processes it would be absurd, ignorant or dishonest to state that anthropogenic warming has not played any role in the ice-rock avalanche disaster in <a href="https://www.linkedin.com/search/results/all/?keywords=%23blatten&amp;origin=HASH_TAG_FROM_FEED">Blatten</a>. Interestingly, <a href="https://www.theguardian.com/environment/2025/jun/01/this-is-ground-zero-for-blatten-the-tiny-swiss-village-engulfed-by-a-mountain">other scientists have indicated that “exact attribution is almost beside the point.”</a> Tellingly, it took almost ten years for formal scientific recognition (see <a href="https://www.nature.com/articles/s43247-024-01624-z">this Nature paper published in 2024</a>) in part because it was seismically triggered, overshadowing the climate-related signal.That said, many Langtangpa highlighted these connections immediately after the disaster, as many are doing in Blatten right now. <a href="https://nepalitimes.com/banner/the-courage-and-endurance-of-the-langtangpa">My friends in Langtang have spent the last ten years rebuilding their lives</a> while wondering if another event of this magnitude might be possible.&nbsp;  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250607140612_5ccfd4786416a151e1c2d44f79add3c196da34e1c30af9188de10982b45d72f8.jpg" data-media-id="editor_9" data-image-id="20250607140612_5ccfd4786416a151e1c2d44f79add3c196da34e1c30af9188de10982b45d72f8" data-rendition-name="original" width="1250" height="885" loading="lazy" alt="Blatten NT"> <figcaption>Copernicus statellite image of the avalanche that buried the village Blatten in Switzerland on 28 May, 2025.</figcaption> </figure>  &nbsp;  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20250607140616_306112d2eb5330d0a5117bae3fc372861afce5137b52f793285e6b1cf89ca31a.jpg" data-media-id="editor_10" data-image-id="20250607140616_306112d2eb5330d0a5117bae3fc372861afce5137b52f793285e6b1cf89ca31a" data-rendition-name="original" width="1733" height="1053" loading="lazy" alt="Langtang NT"> <figcaption>The deadly earthquake-triggered avalance that destroyed Langtang village in Nepal on 25 April, 2015.</figcaption> </figure>  Like the people of the Swiss Alps, the Langtangpa have been living with avalanches for centuries, and they have used both situated knowledge and practical systems to adapt to changing risks. But, in Langtang as in Blatten, the scale and impact of this singular tragedy was both unprecedented and unforeseen. Tellingly, Langtang was not a scientific hinterland: groups from a dozen different countries were conducting glaciological, hydrological, and climatological research there prior to the disaster. Blatten is a case where the scientists knew where to look. But even in relatively well-studied places like Langtang, disasters can emerge in our blind spots.&nbsp; <a href="https://nepalitimes.com/here-now/lives-on-the-line-in-the-himalaya">Last year’s Thame glacial lake outburst flood</a> (GLOF) also began in an overlooked and understudied area – <a href="https://www.stimson.org/2024/rethinking-himalayan-cryosphere-risk-assessment-in-the-wake-of-nepals-thame-disaster/">prompting scientists to rethink the ways we assess glacial lakes</a>. Issues related to <a href="https://www.icimod.org/mountain/permafrost/">melting permafrost</a>, which seems to have been a factor for both the Blatten disaster and <a href="https://www.linkedin.com/posts/tashi-lhazom-5a433b22b_rebuildtil-limifloodrelief-fromtearstohope-activity-7332420946013691904-N0sH?utm_source=share&amp;utm_medium=member_desktop&amp;rcm=ACoAAADxlvsBK3zQKg0X2xPLPS94HyMEettoSU4">the cascading ‘thermokarst lake outburst flood’ that recently occurred in the Limi Valley</a>, are increasingly recognised as a pervasive risk but it is difficult to monitor and the science is young. A multitude of different cryosphere-related disasters are possible across the Himalaya, and background risk is increasing. How do we triage between these different kinds of hazards? How do we know where to look? While it might not have been possible to monitor the glaciers and cryosphere features that contributed to the Langtang disaster, we need to be actively looking for other places where monitoring systems and early warning is possible in Nepal and the broader Himalayan region. Of course, we do need to be precise in our analysis and communication around climate attribution, but consensus does exist on some general trends: climate change is driving new hazard interactions that can generate extreme flows. Therefore, we also need to recognise the undeniable: that background risk is undeniably rising, that lives are at risk, and that we need to invest in building systems that can help anticipate events like Blatten (which takes time, time that others don’t have) immediately. The fact that Langtang has been fully rebuilt and community leaders were effective in determining the shape of their own future and ‘building back better’ their way (as complicated as that may be), demonstrates that a future can be possible, amid uncertainty. But the future of many other communities in the Himalaya, who should never have to go through what the Langtangpa went through if we can avoid it, still remains at-risk without more scientific attention and investment. Meanwhile, the monsoon is arriving in Nepal and another disaster could happen any day now. Coverage of the Blatten disaster has been rightfully robust. Praise for the scientists and authorities who identified these risks and correctly analyzed the situation is also deserved, for that is difficult work. A wider call to learn from this event and use insights to inform policy on climate risk assessment or questions of managed retreat is also exceedingly necessary and urgent. As many scientists are saying: events like this will happen again. This is a scary time in the mountains, in the Alps, in the Himalaya, and many other regions. That said, not all places are equally exposed or vulnerable. To reiterate a core question that I have been asking for years: <a href="https://dialogue.earth/en/climate/opinion-climate-disasters-integrate-local-knowledge/">Whose uncertainties matter</a>? When and why? We know that climate-related loss and damage will not be equally or equitably distributed, and that is one of the core reasons for the UN’s Early Warnings for All program. Blatten is being talked about this week <a href="https://globalplatform.undrr.org/2025/preparatory-days/global-ew4all-multi-stakeholder-forum">while the Global Platform for Disaster Risk Reduction is going in Geneva</a>, from where some of my Nepali colleagues posted photos of them posing with a sign that speaks to the justice issue: ‘Early warnings work. They must work for everyone.” Working toward this noble goal will require a concerted and committed global effort. -- Austin Lord, PhD is a Senior Fellow at the Stimson Center and an environmental anthropologist who has been conducting research in Nepal for the past 13 years on disaster and climate risk management, water and energy policy, infrastructure development, and environmental governance.

Blatten, Langtang, and Disasters Yet to Come?

Nepali Congress (NC) President Gagan Thapa's candidacy in Sarlahi-4 has thrust this Madhes constituency into rare national focus. If Thapa wins and the NC emerges as the largest party, Sarlahi-4 will send Nepal's next prime minister to Parliament. But if he does not, Nepal’s grand old party will face the next years in the opposition to fight another day. There is a troubling paradox in Sarlahi-4 where the district bordering the Indian state of Bihar has been a battleground for national politicians with fierce electoral competition, all while remaining one of the region's most underserved and underdeveloped constituencies.  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20260305140344_069cbbc11e971a851b444866dee57f760c0cc611ed40bdf96c627e343e3c0485.png" data-media-id="editor_0" data-image-id="20260305140344_069cbbc11e971a851b444866dee57f760c0cc611ed40bdf96c627e343e3c0485" data-rendition-name="original" width="1802" height="1276" loading="lazy" alt="Sarlahi-4 voting"> <figcaption>Photo: MADHES PAHARA MEDIA</figcaption> </figure>  Ever since Mahant Thakur split from NC in 2008 to form the Tarai Madhes Loktantrik Party, the district has seen rotating political alliances and fragmented votes. Yet, despite 18 years of candidates promising change irrigation schemes remain incomplete, market access for farmers has not improved, unemployment is high.&nbsp; On election day, voters here marked their ballots with fingers stained by dye from the Holi festival the day before. The road leading to Barathawa Bazar was deserted for the most part, except for some youth riding in motorcycles. This is where the high-profile contest between Gagan Thapa and RSP nominee Amresh Singh is being staged. Among the other aspirants is 27-year-old UML candidate Amnish Yadav, the son of former MP Shiv Pujan Yadav. The Yadavs are a political family with considerable caste influence in the constituency. In 2022 Yadav’s daughter Madhumala Yadav received over 14,000 votes here, ranking third overall. Yadav was voted MP from the Maoist party, but defected to the UML this time. His other son is the chair of Sarlahi’s Ramnagar Rural Municipality. Sarhali-4 has 121,012 voters, and the Yadav is banking on the 27,000-strong Yadav vote bank. Sarlahi-4 voter Avishek Sah told us he wanted his vote to go to a young nominee and not someone who has been MP thrice already, like Amresh Singh. &nbsp;  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20260305140344_527c5c2f9aa6a6c7e3bbdfbfe79fdafb0a0b56a62427e9ced86b924c6c563b10.jpg" data-media-id="editor_1" data-image-id="20260305140344_527c5c2f9aa6a6c7e3bbdfbfe79fdafb0a0b56a62427e9ced86b924c6c563b10" data-rendition-name="original" width="1200" height="1600" loading="lazy" alt="Sarlahi-4 voting"> <figcaption>Photo: AYUSHA CHALISE</figcaption> </figure>  To make local loyalties even more complicated, Amnish Yadav’s uncle, Harinder Yadav is an active NC member and walked side by side with Gagan Thapa during his door-to-door campaigns.&nbsp; The NC is betting on Thapa getting over 60% of the total votes. Amresh Singh’s tally could be limited to 10,000 votes — that too because of the nationwide RSP wave, and the popularity of its prime ministerial hopeful Balendra (Balen) Shah. “Amresh Singh lost his appeal when he played victim after he was denied a ticket by the NC in 2022,” Harinder Yadav says. Voters we spoke to here agreed with this assessment that Singh did not do much for the district once he got elected in the past, and being a part of the RSP seems to be his biggest asset. “The only reason I voted for Amresh Singh is because Balen is in RSP,” local voter Mahendra Gupta from Barathawa. &nbsp;“This is his last chance to return the people’s trust.”&nbsp; Gupta is aware of the institutional presence of the NC here. The party received the most votes in 2022 local elections, adding that the candidacy of someone as high-profile as Thapa is a positive sign for Sarlahi-4.&nbsp; Other voters like Ruby Gupta are rooting for both the NC and the RSP. “I will vote for Gagan and for Balen,” she says, adding that her FPTP vote will go to Thapa while her PR ballot would be for the RSP. RSP supporters are confident that their candidate will win big because even though many voters may not have openly voiced their support they still voted for the party and candidate. The Balen Wave was not limited to RSP voters, but also to UML candidate Yadav, who said in a gathering that he will be “the voters Balen” if they elect him. He touted his party’s track record in government, and largely campaigned on administrative efficiency, infrastructural expansion, and local service delivery. Amresh Singh ran on the RSP’s anti-establishment brand, promising to fight corruption, challenge traditional party politics, improve basic services such as education, health, jobs, and infrastructure, while pushing for stronger representation and development for Madhes.&nbsp;  <figure> <img src="https://publisher-publish.s3.eu-central-1.amazonaws.com/pb-nepalitimes/swp/asv65r/media/20260305140344_982df01801fa7d3532ca0555ecb8a0756e3223be3d93650e08ca82a312dc2ebd.jpg" data-media-id="editor_2" data-image-id="20260305140344_982df01801fa7d3532ca0555ecb8a0756e3223be3d93650e08ca82a312dc2ebd" data-rendition-name="original" width="1600" height="1200" loading="lazy" alt="Sarlahi-4 voting"> <figcaption>Photo:AYUSHA CHALISE</figcaption> </figure>  Singh’s rivalry with his NC competitor goes beyond the ballot— he allegedly blames Thapa for being denied the NC ticket in 2022, which led him to win the election from Sarlahi-4 as an independent. &nbsp; For his part, Gagan Thapa focused on a more pragmatic development agenda that includes upgrading roads and irrigation, improving schools and hospitals, supporting farmers, and creating employment opportunities with improved governance at the centre. He also promised to build an engineering college in the constituency.&nbsp; Thapa also promoted his own anti-establishment image within the NC, repeatedly reminding voters on the campaign trail that he represents the aspirations of the youth.&nbsp; On Thursday, as voting progressed, there were violent disruptions in two centres where voting was briefly halted. But Sarlahi district police spokesperson Saroj Rai told Nepali Times that there were no major problems. Police in collaboration with the Nepal Army sent the ballot papers to the district’s counting stations, where the votes are expected to be tallied through the night and the winner announced Friday morning.

Sarlahi-4 nervously watches ballot count

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Nepal election live results

As this report is uploaded, the latest results in Nepal’s election show that the Rastriya Swatantra Party (RSP) is headed for an even bigger sweep than most had predicted.
The RSP was leading by large margins in 49 of 165 constituencies, &nbsp;with the UML, NC and NCP trailing far behind. Prominent political figures from the old parties like K P Oli, Minwndra Prasad Rijal, Ishwar Pokhrel, Bishnu Prasad Poudel, Bimalendra Nidhi all seem headed for defeat.
It does look like the RSP’s bell election symbol is ringing right across Nepal — from cities to the remotest districts in the mountains and plains. The party’s blue colour is sweeping the land.
The Nepali people seem to have sent a clear message that they were throughly dissatisfied with the chronic failure of the three main parties to work in the national interest to create jobs and deliver development. It was also an expression of lingering outrage over the the 8 September massacre outside Parliament. &nbsp;
It now looks almost certain that Balendra Shah will get to be Nepal’s next, and youngest, prime minister. Hopefully he will be leading a cabinet of competent and honest technocrats. It remains to seen how the power equation between Shah and the RSP’s leader, Rabi Lamichhane will play out.
Lamichhane is out of jail on bail for fraud cases which he has called political vendetta by the previous regime. Both he and Shah are charismatic and ambitious. Their working relationship will determine Nepal's political stability and whether it can avoid the political cronyism of the past.
This election was not just about casting votes. It was about standing up to principles and a value system, and respecting the hopes and aspirations of Nepal’s youth. It to push for transparent government and against impunity — including for the gunning down of young Nepalis in cold blood.
<div class="embed-block"><iframe src="https://election-geo-dashboard.pages.dev/" width="100%" height="600" frameborder="0"> </iframe>Live election results as winners of candidates are announced.</div>
CAN DO MAN
Shah got mixed reviews as mayor. He was impulsive and ad hoc, but most people inKathmandu and beyond liked his can-do attitude and unconventional style which stood in sharp contract to the legacy leaders. Over his three year mayorship he showed more maturity and planning capacity.&nbsp;
But he always ran headlong into opposition from the federal government over his urban planning and other initiatives to make Kathmandu more liveable. Coming from a civil and structural engineering background, he was involved in building low-cost housing after the 2015 earthquake.
But his public persona is more tied to his irreverent rap lyrics that stood up for the marginalised underprivileged in society, while exposing the high-handedness and apathy of the state. But this also exposed contradictions because he also used his own municipal guards to beat and chase away street vendors and squatters.
But there is no doubt that a combination of the sharp messaging in his rap videos amplified by the algorithms of social media ignited Nepal’s youth to rise up. It was more about optics and emotion than policy and strategy.
He studied Kathmandu district for five years, visiting experts in every field before announcing his independent candidacy for mayor in 2022. Many like me in his own constitunecy did not know who he was and where he came from.
He is a year younger than my architect son, and I saw in him a reflection of my own son’s commitment to serving the nation. I voted for him to be mayor despite his sometimes erratic behaviour, which could be attributed to his youth.
The best sign of his strategic planning, which unsettled septuagenarian and octogenarian politicians, is the he did not grab the first easy option of becoming prime minister in September when GenZ activists offered him the post.&nbsp;
Joining RSP was a masterstroke, as was his challenge to Oli in Jhapa to project national branding. He needed a party platform and Lamichhane needed a popular prime ministerial persona since he himself could not hold the post.
Shah has shown the capacity to take risks when he believes the value justifies the action for the country. Now, he will have to show more strategic thinking on a national scale, as well as understand the delicate geopolitics of Nepal.&nbsp;
He must rise above the kind of crude social media posts that earned him followers on X, but did nothing to erase his erratic and impulsive image.&nbsp;
Some assume that behind his trademark RayBan shades is a closet dictator, and his past remarks about Hitler are still up on social media. He has in the past shown impatience with criticism, unleashing supporters on social media to troll detractors.&nbsp;
Even so, the public seems willing to place their hope on an educated young man with integrity and a proven record for planning at the helm. By tomorrow it will be clear whether the hope Nepalis have held has been fulfilled, and the coming years will show if the RSP will lead Nepalis to a better future.
The voters seem to have shown the door even to the NC despite the fact that under Gagan Thapa, the party had turned a new leaf. A strong government under Prime Minister Balendra Shah heading a carefully selected cabinet and a strong opposition of the NC, UML and other parties for check and balance may be just what we need for a stable Nepal.&nbsp;
Nepalis have collectively always shown maturity in elections. This time they have given a resounding endorsement for integrity and for good governance.

Bells ring all over Nepal

After Thursday’s election, Nepalis are in a wait-and-watch mode. The Election Commission says counting ballot papers will be expedited this time, and the results for the First-Past-The-Post (FPTP) will start being declared within days. In 2022, it took three weeks for the final results to be tallied.&nbsp;
But winning an election is only half the challenge for the parties, forming a government under parliamentary politics is like a complicated mathematical equation.&nbsp;
In 2022, the Nepali Congress (NC) emerged as the biggest party, winning 89 seats. But the UML with 78 seats and the Maoists with 32 formed a minority government. In fact, Sher Bahadur Deuba did not become PM then despite leading the biggest party in Parliament.
This time, there is an unmistakeable Rastriya Swatantra Party (RSP) wave led by its prime ministerial candidate, Balendra Shah. Besides his own popularity, Shah represents change which most Nepalis are clamouring for after decades of corrupt and feckless coalitions that did not deliver.&nbsp;
The past months of campaigning has seen massive youth engagement on social media through memes, AI clips, and viral images. Digital content that appeals to emotion rather than policy debate between candidates shape electoral outcomes in Nepal and elsewhere. &nbsp;
Shah represents GenZ aspirations, and was their candidate for prime minister. It was only when he declined that Sushila Karki was nominated. None of the political parties in the recent past -- new, old, or revolutionary — have won enough seats to go it alone.&nbsp;
The most recent majority government was formed by the short-lived Communist Party of Nepal after the UML-Maoist merger in 2022. But that rare two-thirds majority collapsed after a power struggle between K P Oli and Pushpa Kamal Dahal. The only party to have won a majority was the NC in the 1991 and 1999 elections. But it is near impossible for it to repeat this success now, even with Gagan Thapa's rebranding of the party.&nbsp;
We have compiled these possible scenarios for election outcome in order of likelihood:
RSP gets a majority
RSP hits the magic 138 to form a government entirely on its own. Balendra Shah wins Jhapa-5, and becomes the new prime minister at 35, the youngest ever to hold the office in Nepal. But danger lurks: there could be a personality clash between Shah and Lamichhane who are both equally ambitious. History could repeat itself.&nbsp;
RSP wins but does not get a majority
RSP is likely to sweep the most votes, but what if it does not secure enough seats for a majority? It would need a coalition partner and Nepali Communist Party (NCP) under Pushpa Kamal Dahal could fit the bill, but only if it has the numbers. The RSP is not likely to team up with the UML or NC.
The NCP is relatively untainted by the 8 September events, and also has former UML defectors like Madhav Kumar Nepal and Bhim Rawal who could bag their rural vote banks. After all, there are no permanent foes in politics. If the royalist RPP and Tarai-based Janata Samajwadi have enough seats, those could be options for the RSP. &nbsp;
NC is second
The NC under the new leadership of Gagan Thapa could become the second biggest force and form a government with RSP in a power-sharing deal with Shah. This would be the most stable scenario since the RSP and NC have competent and idealistic young technocrats. Thapa himself embodies a strong combination of both old and new politics to navigate the system for more efficient government. But then Thapa and the RSP's Rabi Lamichhane do not get along.
NC and NCP form a majority
If the NC becomes the largest party but not by a big margin, it could join up with the NCP and Ujyalo. Teaming up with the UML would likely face backlash with the party and outside. If Gagan Thapa becomes prime minister he will face internal pressure from both Deuba loyalists. Same old story.
Minority coalition of NC, UML and NCP
RSP becomes the first party but does not get a majority, paving the way for the three legacy parties to cobble together a minority government. While this is possible in Nepal’s parliamentary system, such a scenario is likely to lead to more instability and dissatisfaction among young Nepalis demanding change, and even trigger street unrest. &nbsp;