Avalanche Forecast
Issued: Dec 3rd, 2019 5:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
dsaly,
Avalanche Canada
New snow and wind! Expect more reactive deposits of storm snow around lee features and cross-loaded terrain.
Summary
Confidence
Weather Forecast
Tuesday night: Snow and flurries, 10-15 cm accumulating overnight. Alpine temperature -10 C, west wind 30-55 km/hr.
Wednesday: Cloudy with scattered flurries, up to 5 cm. Alpine temperature -10 C, west wind 10-25 km/hr.
Thursday: Cloudy with sunny periods. Alpine temperature -13 C, southwest wind 15-30 km/hr.
Friday: Snow, 10-20 cm. Alpine temperature -10 C, southwest wind 10-25 km/hr.
Avalanche Summary
There have been no recent reports of avalanches from this region, however this may be due to a lack of field observations.
Further south, a natural avalanche cycle was observed in Glacier National Park Tuesday. Numerous size 2 storm slab avalanches were observed on all aspects at 2200 m and above. Additionally, 2 size 3 storm slab avalanches were observed on a north aspect at 2165 m and a northwest aspect at 2400 m.
Explosives also triggered a size 3 storm slab avalanche on a north aspect at 2200 m along the Trans-Canada Highway corridor this afternoon. Similar conditions are expected in the Cariboo forecast region.
Snowpack Summary
Snowfall deposited upwards of 25-35 cm of snow around the region. Westerly winds have begun to redistribute new snow into lee features and cross-loaded terrain.
The new snow now covers a faceted upper snowpack and previously wind-affected surfaces. Below the old, wind affected snow, a layer of surface hoar (feathery crystals) may be found in sheltered areas around treeline. In these areas old, stubborn wind slabs may still be reactive where they overly the weak surface hoar on a crust.
A variety of crusts from late October are burried deeper in the snowpack.
Problems
Storm Slabs
With around 30 cm of new snow and moderate westerly winds, storm slabs have formed in the alpine and treeline. As winds impact the new snow, expect to find more reactive deposits in lee features and cross loaded terrain.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Valid until: Dec 4th, 2019 5:00PM
