Avalanche Forecast
Issued: Dec 21st, 2024 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs, Deep Persistent Slabs and Loose Dry.
Parks Canada,
Avalanche Canada
Seek out sheltered areas less affected by recent winds. Avalanches in the upper snowpack have the potential to step down to deeper instabilities.
Small loose avalanches still have the potential to be hazardous above ice routes and terrain traps.
Summary
Confidence
High
Avalanche Summary
Friday numerous loose dry avalanches up to size 1.5 were observed south of Parker Ridge on steep solar aspects. Thursday several avalanches were observed along the Churchill Range on east faces in alpine up to size 2.5 and running to ground. Some of these avalanches were caused by falling cornices.
Snowpack Summary
25-45 cm wind loading in lee features. The 7mm Surface Hoar that formed last week could be preserved under new snow in sheltered locations. The mid and lower snow pack has multiple layers of surface hoar in sheltered terrain, melt freeze crusts and facets.
Weather Summary
Sunday
Mainly cloudy with isolated flurries. Precipitation: Trace. Alpine temperature: High -4 °C. Ridge wind southwest: 15-25 km/h. Freezing level: 1500 m.
Monday
Cloudy with sunny periods and isolated flurries. Precipitation: Trace. Alpine temperature: Low -8 °C, High -5 °C. Ridge wind southwest: 15-35 km/h. Freezing level at valley bottom.
Terrain and Travel Advice
- Be mindful that deep instabilities are still present in the snowpack.
- Be careful as you transition into wind-affected terrain.
- Small avalanches may cause climbers to fall or bury belayers and gear.
Problems
Wind Slabs
Recent snow and strong winds have created wind slabs. Avoid wind loaded unsupported terrain.
Aspects: North, North East, East, South East, West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
A variety of crusts with facets above and below exist at the bottom of the snowpack. These layers are going to be with us for along time and pose a low probability, high consequence situation if triggered.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Dry
Loose dry avalanches of concern in areas above ice climbing routes.
Aspects: East, South East, South, South West, West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Dec 22nd, 2024 4:00PM
