The snowpack structure is a loaded gun waiting for the next storms with the unusually low early season snowfall, according to an avalanche warning issued for Coastal Mountains.
Mountain Conditions Report said avalanches in Whistler have been reported up to size 2.5 and are failing 40-80cm down on a crust layer formed in November.
“Snowpack tests on the November 23 layer have been showing good potential for avalanche propagation. Also large whoomps have been observed in many locations,” the report said.
With more snow in the forecast, this layer is more likely to trigger and create widespread avalanche danger.
“The sleeping avalanche dragon is about to wake up. With Christmas coming, combined with the pent-up desire for backcountry travel due to the late arrival of winter this year, the recipe could not be worse for human triggering, the report warns.
“The upcoming period is a time to stick to conservative, low-angle terrain and be aware of the potential for overhead slopes or nearby steep slopes that may effect you.”
Meanwhile, North Shore Rescue is urging people to take an avalanche course if they plan to recreate in the backcountry.
“Always check the danger rating and carry the appropriate equipment,” they said.
Avalanche Canada is also issuing a similar warning for areas that also includes North Shore mountains.
“The snowpack in coastal areas of BC feels more like the rockies right now. It’s shallow and weak, with a persistent slab problem in the Sea to Sky, South Coast, and South Coast Inland regions. Play it safe if you’re heading out there, the organisation said.
“Use caution as you transition into wind exposed terrain. Avalanches are possible in alpine terrain where wind slabs have formed.”
