Avalanche Forecast
Issued: Jan 27th, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs.
ldreier,
Avalanche Canada
Where winds reach more than 20 km/h and impact loose snow, fresh wind slabs are likely to form in alpine lee terrain features.
Summary
Confidence
Moderate - Uncertainty is due to the speed, direction, or duration of the wind and its effect on the snowpack.
Weather Forecast
WEDNESDAY NIGHT: Cloudy with isolated flurries, trace to 3 cm of new snow, moderate southwest wind at treeline and strong in the alpine, treeline temperatures around -8 C.
THURSDAY: Mainly sunny with cloudy periods and scattered flurries, trace to 2 cm new snow, light to moderate southwest wind, treeline temperatures around -5 C.
FRIDAY: Mainly cloudy with scattered flurries, trace of new snow, light southwest wind, treeline temperatures around -6 C.
SATURDAY: Mainly cloudy with scattered flurries, trace to 2 cm new snow, light southwest wind, treeline temperatures around -8 C.
Avalanche Summary
Loose dry avalanches (sluffs) in steep alpine and treeline features were reported on Monday.Â
Snowpack Summary
Up to 25 cm recent low density snow that has buried surface hoar and other old surfaces. In the alpine, new snow sits on top of layers of hard wind slab, scoured areas, sastrugi and isolated pockets of soft snow. A hard crust is found up to 1700 m.   Â
A solid mid-pack sits above a deeply buried crust and facet layers near the bottom of the snowpack (150-200 cm deep), which are currently unreactive.Â
Terrain and Travel
- Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
- Be carefull with sluffing in steep terrain, especially above cliffs and terrain traps.
- Pay attention to cornices and give them a wide berth when traveling on or below ridges.
Problems
Wind Slabs
Wind from the southwest continues at moderate levels at treeline and strong levels in the alpine Wednesday night and decreases Thursday morning with a few cm's of new snow. Where winds reach upward of 20 km/h and impact loose snow, fresh wind slabs are likely to form around ridge crests or in lee alpine terrain.
Cornices might grow larger and more fragile with the wind.
Aspects: North, North East, East, South East, West, North West.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Jan 28th, 2021 4:00PM
