Swiss Glaciers Melt at Record Pace, Threatening Water Supply

Thu Oct 01 2026 03:18:24 GMT+0000 (Coordinated Universal Time)

In 2026, Swiss glaciers lost 5.5% of their ice in a single year, a record loss threatening agriculture, hydropower and flood risk.

Scientists report a 5.5% loss of Switzerland’s glacier ice during 2026, the fastest decline ever seen in the Alps. The heatwaves of May and June removed snow cover, exposing darker ice that melts faster and released 2.2 trillion litres of meltwater between July and September. The rapid retreat threatens future water supplies for farming, hydropower and transport, while thinner glaciers increase the risk of landslides and flash floods. Despite the alarming trend, narrow carbon‑emission cuts could still protect much of the world’s ice, especially in the Himalayas and polar regions.

Swiss Glaciers Melt at Record Pace, Threatening Water Supply

Scientists have recorded a 5.5% loss of Switzerland’s remaining glacier ice during 2026 – the fastest annual decline ever seen in the Alps.

In a new report from Glacier Monitoring Switzerland, researchers label the loss “extraordinary” and warn that rapid melting could compromise water supplies for farming, hydropower and transport for decades to come.

The heatwave of May and June stripped away the seasonal snow that had covered the glaciers, exposing ice surfaces that absorb more heat and melt faster than fresh snow.

Between July and September, glaciers released 2.2 trillion litres of meltwater, temporarily easing shortages but draining the reservoir that feeds rivers during dry spells.

At the highest elevations, no winter snow remained even at 3,500 metres – a sign that glaciers are starved and will shrink further, with some already vanishing.

Taller glaciers also increase slope instability, amplifying flash‑flood and landslide risks, as seen in Nepal earlier this year.

Nonetheless, sharp cuts to carbon emissions could still save much of the planet’s ice, especially in the Himalayas and polar regions, potentially limiting future sea‑level rise.