More than 500 climbers and support staff were evacuated from Mount Everest in October after an unseasonal blizzard struck the world’s highest peak with little warning, Nepali officials said.
Meteorologists described the October storm as unprecedented. The sudden weather shift trapped climbers attempting late-season summit pushes, along with Sherpa guides and porters stationed across Camps 2, 3, and 4.
“We had clear forecasts showing stable conditions through the week,” said Dawa Sherpa, operations director for Seven Summit Treks. “This system developed rapidly over the Tibetan Plateau and hit us within hours.”
Nepal’s army deployed helicopters for high-altitude rescues, while ground teams organized rope-assisted descents in whiteout conditions. At least 15 climbers suffered severe frostbite, and three remain hospitalized in Kathmandu with hypothermia-related complications.
Climate scientists said warming patterns in the Himalayas are contributing to more volatile and unpredictable weather. Dr. Sarah Mitchell of the International Centre for Integrated Mountain Development noted that traditional climbing seasons are becoming increasingly unreliable.
“We’re seeing weather windows shift and storms intensify more quickly,” Mitchell said. “What was once predictable is now anything but.”
The incident has prompted calls for improved mountain weather monitoring and stricter expedition permit controls during shoulder seasons. Nepal’s tourism ministry said it will review climbing guidelines before the spring 2026 season.
While no fatalities were reported, several expedition companies have canceled remaining autumn climbs.