
A skier wearing a backpack travels conservative backcountry terrain.
Paul Chiddle, Outdoor Centre
Jan. 12, 2023
The snowpack in western Canada is extremely weak this year and these dangerous conditions are expected to persist for the rest of the season.
“It is important for any outdoor enthusiast heading into the backcountry to understand why these conditions exist and how to minimize the risk,” says Paul Chiddle, manager of the University Calgary Outdoor Centre, and a mountain guide qualified by the International Federation of Mountain Guides Association.
The snowpack in western Canada has been affected by a lack of snow and cold weather, leading to the formation of weak layers that are prone to triggering large, dangerous avalanches. These weak layers are buried deep enough that there are few signs of instability, making them difficult to detect.
Many avalanches this winter have been triggered from a distance, indicating that the weak layers in the snowpack are widespread, interconnected, and unstable. These layers, particularly in wind-affected areas and rocky terrain, are more likely to be triggered when they are shallowly buried.
“This year’s snowpack is different from most previous years,” writes Mike Conlan, an avalanche forecaster, on the Avalanche Canada website. “Professionals with decades of experience suggest this weak of a snowpack is only seen once every 10 to 20 years for much of western Canada. Some professionals are comparing this snowpack to 2003, which was one of the worst years on record for avalanche fatalities.”
A skier wearing a backpack travels conservative backcountry terrain.
Paul Chiddle, Outdoor Centre
“An avalanche triggered on these layers is likely to be large to very large in size and could be fatal for those caught in it,” adds Chiddle, a 21-year veteran of backcountry guiding.
The best way to manage the risk of avalanches is through conservative terrain choice. Avoid high-consequence terrain at all costs and, where possible, travel on slopes with a slope angle of less than 30 degrees while remaining vigilant of the terrain above and below you.
“It is extremely important to be cautious and continue with this mindset even during periods of reduced or no avalanche activity,” says Chiddle.
The Outdoor Centre has been renting gear and delivering outdoor programs at the University of Calgary for more than 45 years. We offer a large range of programs and rentals to outdoor lovers both on and off campus. Learn more here.
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