Avalanche Forecast
Regions: Glacier.
Be on the lookout for isolated pockets of wind slab in leeward terrain and in areas with visible wind effect.
Warming temperatures may increase the reactivity of wind slabs.
Confidence
Moderate
Avalanche Summary
Sluffing in steep terrain has been reported by multiple parties in MIN reports over the past few days.
No new natural avalanche activity reported over the past 2 days.
Snowpack Summary
Up to 40cm of low density snow has covered a variety of old snow surfaces. These include wind affected snow in exposed Alpine terrain, 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
Warming trend...
Tonight: Cloudy with clear periods. Ridge wind SW 20-30 km/h. Freezing level (FZL) 800 m. Alpine temperature inversion.
Tues: Cloudy with sunny periods. No precipitation. Alpine high 1 °C. Ridge wind W 15-35 km/h. FZL 1800 m. Weak temperature inversion.
Wed: A mix of sun and cloud. No precipitation. Alpine high 2 °C. Ridge wind SW 15. FZL 2600 m.
Thurs: Flurries. 8 cm snow. Ridge wind SW 20. FZL 1300 m.
Terrain and Travel Advice
- Wind slabs are isolated, but may remain reactive.
- Be careful with sluffing in steep terrain, especially above cliffs and terrain traps.
Avalanche 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.
Likelihood: Unlikely - Possible
Expected Size: 1 - 2