Avalanche Forecast
Issued: Nov 30th, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Loose Dry.
Parks Canada/Parcs Canada,
Avalanche Canada
Keep a keen eye for the effects of warming temperatures these next couple of days. New snow could change from light and fluffy to slabby and reactive!
Be prepared to manage your slough where snow is unconsolidated in the alpine at at treeline.
Summary
Confidence
Moderate
Avalanche Summary
Moderate southerly winds are building fresh windslabs in exposed alpine areas.
Recent Loose dry avalanches have been observed in the Park. The steep North face of Mt Macdonald has been shedding some of the new snow, producing size 2's just reaching the top of run outs.
Rider triggered sluffing has been noted in recent MIN reports as well.
Snowpack Summary
Up to 40cm of very low density snow has fallen over the past week! This new snow has buried a variety of old snow surfaces. These include: wind affected snow in higher Alpine areas, a crust on solar aspects, and settled storm snow in sheltered terrain.
The Nov 9 crust is down 50-100cm. The base of the snowpack is comprised of several dense, melt-freeze rain crusts formed in October.
Treeline snowpack depths average 110-130cm, falling to 45cm at Rogers Pass (1315m).
Weather Summary
The edge of a warm front will bring light flurries and rising temps to Rogers Pass over the weekend. High pressure sets up in its wake.
Tonight: 5cm of snow. Alp Low -7 °C. SW winds 25km/hr. Freezing Level (FZL): 900m
Sun: Isolated flurries, trace precip. Alp High -4 °C. Light SW winds. FZL: 1500m
Mon: Cloudy with sunny periods. No new snow, Alp High -2 °C. Light SW winds. FZL: 1300m
Tues: Mix skies, no precip. FZL 1500m.
Terrain and Travel Advice
- Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
- Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.
Problems
Wind Slabs
Recent fresh snow has been blown around by Southerly winds. Look out for fresh windslab at ridge top or areas at treeline exposed to wind.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Dry
New light snow has been sluffing fast in steep terrain. Pay attention in gully features or in places where you don't want to be pushed by your sluff.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 1st, 2024 4:00PM
