Avalanche Forecast
Issued: Dec 4th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Loose Wet and Wind Slabs.
Parks Canada,
Avalanche Canada
Warm temps and strong solar input may trigger loose, wet sluffs in steep South and West facing terrain.
Use caution travelling on and under these slopes, especially if the surface is moist.
Summary
Confidence
Moderate
Avalanche Summary
Loose avalanches have been observed this week. Dry loose avalanches/sluffing has been rider triggered in steep terrain with powder snow. Wet loose avalanches have been solar triggered above the valley cloud in steep terrain facing the sun.
Snowpack Summary
Surface hoar and sun crust on steep solar aspects are present at Treeline and into the Alpine. Below this, 20-40 cm of settled storm snow sits on various old surfaces, including: wind affect in exposed Alp terrain and a crust on solar aspects.
The Nov 9 crust is down 50-100 cm. The base of the snowpack is comprised of several dense, melt-freeze rain crusts formed in October.
Treeline snowpack depths approx. 120 cm, with 40 cm at Rogers Pass (1315m).
Weather Summary
Valley cloud and warm air aloft will get pushed out by an incoming storm on Friday.
Tonight: Valley cloud, Alp low -1°C, light winds, 1600m Freezing Level (FZL)
Thurs: Valley cloud, Alp high 1°C, light SW winds,1700m FZL.
Fri: Flurries, 10cm, Alp high -1°C, mod SW winds,1500m FZL.
Sat: Snow, 15-25 cm, Alp high -2°C, mod SW winds, 1500m FZL
Terrain and Travel Advice
- Avoid steep, sun-exposed slopes when the air temperature is warm or when solar radiation is strong.
- Wind slabs are isolated, but may remain reactive.
Problems
Loose Wet
Above freezing temperatures at Treeline and in the Alpine, coupled with direct sun are triggering loose/moist sluffs from steep solar aspects. This may be hard to identify with valley cloud blocking your view into the Alpine, but be aware that the sun is shining strong up high!
Aspects: South East, South, South West, West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Wind Slabs
Watch for pockets of stubborn wind slab can be found in wind-exposed Alpine terrain.
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Dec 5th, 2024 4:00PM
