Avalanche Forecast
Issued: Nov 27th, 2021 3:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
JMackenzie,
Avalanche Canada
Sunday could bring a significant storm with lots of wind. Extensive wind slab development is likely at upper elevations. Avoid avalanche terrain.
Summary
Confidence
Moderate -
Weather Forecast
Sunday will see the arrival of a significant storm for the region. Up to 30cm of snow is possible with SW winds peaking at 125 km/h at mountain top. Freezing levels will be near 2000m. Monday could see an additional 15cm of snow with slightly slower wind speeds.
Avalanche Summary
No new avalanche were observed today.
Snowpack Summary
Moderate to strong winds continue to move snow around, especially at higher elevations. Alpine areas and open treeline terrain are heavily wind affected. Wind slabs are prevalent in lee and cross-loaded terrain, and the forecasted storm on Sunday will create fresh wind slabs. Thankfully the midpack and basal layers are uncharacteristically strong and dens for this time of year.
Terrain and Travel
- Approach lee and cross-loaded slopes with caution.
- Watch for areas of hard wind slab on alpine features.
- Ice climbers should be equipped with avalanche safety gear.
- Be carefull with sluffing in steep terrain, especially above cliffs and terrain traps.
Problems
Wind Slabs
There will be several layers of windslabs on top of each other as this storm plays out. Within these layers there will likely be a weak, reactive layer to watch for.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 28th, 2021 3:00PM
