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Many Of This Season's Avalanche Deaths Result From Persistent Slab Avalanche Problem


Credit Bridger-Teton Avalanche Center
In the first week of February, avalanches in the United States killed at least 14 people. That s the highest number of deaths in a seven-day period for at least a century.
Experts say it s partly because more people are out in the backcountry.
I think starting in March, with the closure of so many ski resorts, many people turned to ski touring in the backcountry in order to recreate outside in perhaps a safer way in the pandemic standpoint, said avalanche educator Jenna Malone. Malone works for the American Avalanche Institute.
Most of the deaths are a result of a persistent slab avalanche problem. That means there is weak snow in the snowpack, andthe normal signs and stability tests that people are trained to do to avoid avalanches aren t there, Malone said. ....

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The Inherent Dangers of Backcountry Skiing in Colorado's Mountains


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The Inherent Dangers of Backcountry Skiing in Colorado’s Mountains
What can a fatal backcountry skiing accident on Jones Pass, on the west side of the Continental Divide, teach us about Colorado’s snowcat outfitters? And can these quintessential Centennial State adventures ever truly be safe?Tracy Ross •  
The avalanche that killed my friend, Hans Berg, on Jones Pass on the afternoon of March 7, 2019, was about 2,000 feet wide and ran from its start, beneath a cornice that collapsed, approximately 1,000 feet to its stopping point, across a snowcat road. The avalanche, according to the Colorado Avalanche Information Center (CAIC), spread both to the north and south of the spot where the school-bus-size chunk of cornice fell and triggered more breaks on a sheet of snow that sat on what avalanche professionals call a persistent weak layer (PWL). PWLs resist bonding to other layers of snow over time, and when disturbed they can fail, sometimes creating massiv ....

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