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Clear skies, calm breezes and a breathtaking vista of majestic peaks draped in snow - that is the autumn setting that trekkers on Mount Everest have grown to adore.

But that appears to be shifting.

Changing Climate Conditions

Weather experts report the monsoon now stretches into fall, which is historically the mountain tourism period.

Throughout this delayed conclusion of monsoon, they have documented at least one instance of heavy precipitation nearly every year for the past ten years, with high-altitude weather becoming increasingly dangerous.

Recent Emergency on Everest

Last weekend, a shock snowstorm stranded several hundred of tourists near the eastern face of Everest for multiple days in freezing conditions at an elevation of more than 4,900m.

Almost 600 hikers were guided to security by the end of that week, according to reports.

A single individual had succumbed from extreme cold and altitude sickness, but the others were said to be in stable health.

Comparable Events Across the Region

This was on the Tibetan side but a comparable situation had occurred on the southern side, where a South Korean climber lost his life on another Himalayan summit.

The world learned after some delay because communications were affected by torrential rains and heavy snowfall.

Officials calculate that landslides and sudden floods in the country have killed around 60 people over the previous week.

"This is very unusual for autumn during which we expect the weather to stay calm," said an experienced mountain guide.

Economic Consequences

Considering this is the favored period, regular storms like this have "hampered our trekking and climbing industry," he added.

The rainy period in northern India and Nepal typically lasts from early summer to mid-September, but no longer.

"Our data demonstrates that most of the years in the previous ten years have had rainy seasons continuing until the second week of October, which is definitely a shift," explained a high-ranking weather expert.

Growing Weather Extremes

Even more concerning is the heavy precipitation and snow the tail end of the period brings, like it did this time on 4 and 5 October.

At elevation in the Himalayas, such extreme weather means snowstorms and snowstorms, which represents a huge danger for trekking, climbing and tourism.

Personal Experiences

Exactly what happened recently when the conditions shifted very suddenly - the winds began roaring, mercury readings plummeted and visibility decreased significantly.

The path that had easily brought the trekkers to what was expected to be a stunning resting point was now covered in snow and impossible to traverse.

Nevertheless, one hiker, who had hiked these mountains more than a twelve occasions, said he had "never experienced weather like these" before.

Expert Explanations

One big factor is the increased quantity of humidity in the air because of how the planet has been warming, researchers say.

This has led to torrential rains over a brief period of duration, frequently after a extended dry spell – unlike in the past when monsoon showers were spread uniformly over the entire season.

A Intensified Monsoon

Weather experts report the rainy seasons in the region at times seem to have become stronger because they are more frequently interacting with another atmospheric phenomenon, the westerly disturbance.

The phenomenon is a low pressure system that forms in the Mediterranean area and moves eastward - it carries cold air that causes precipitation and occasionally snow to northern India, neighboring countries and Nepal.

Climate Change Effects

Researchers have additionally discovered that in a heating world, the increasing relationship between western weather systems and seasonal rains is producing an additional unusual result.

The warmer atmosphere is pushing the clouds to greater altitudes, which indicates these atmospheric conditions are now capable to pass over the mountain barrier and affect the Tibetan plateau and additional regions that did not see as much rain in the past.

"The transformation is the reliability of weather patterns; we can't assume that situations will behave the same from season to season," commented an seasoned expedition leader.

"This implies flexible scheduling, immediate choices, and knowledgeable guidance [in the Himalayas] have become increasingly important."