Nepal’s ‘Himalayan Tsunami’ is a warning for the entire region.

Melting glaciers are making Nepal’s mountains dangerously unstable. As ice retreats, it leaves behind loose rock and debris. This weakens the terrain, increasing the risk of sudden landslides. These landslides can block rivers, creating natural dams. When these dams break, they release massive floods of water and mud downstream. Scientists call this a glacial lake outburst flood, but locals often use a more dramatic term: a "Himalayan tsunami." The danger comes from a combination of factors. Extreme weather events, such as heavy rainfall, can trigger these chain reactions. The result is unpredictable and devastating for communities living in the valleys below. This instability is not just a problem for Nepal. The same conditions exist across the wider Himalayan region. The threat is clear: what happens in the high mountains can have sudden and lethal consequences for millions of people downstream.