Avalanche Forecast
Issued: Nov 29th, 2023 4:00PM
The alpine rating is Wind Slabs.
, the treeline rating is , and the below treeline rating is Known problems includeGood skiing can be found on moderately angled, sheltered slopes around treeline. Steep, wind loaded features are the most likely to produce an avalanche failing on weak basal snow.
Summary
Confidence
Moderate
Snowpack Summary
Surface conditions are a mix of large surface hoar topping 10-20 cm of faceting storm snow in shaded, sheltered areas, sun crust on steep south and west-facing slopes, and wind effect in exposed terrain at treeline and above.
A crust with sugary facets beneath it can be found 10 to 20 cm above the ground.
Expect early-season conditions with a shallower-than-average snowpack. Coverage is reportedly poorest in the alpine and below treeline. At treeline, depths are between 60-100 cm.
Weather Summary
Wednesday Night
Mainly clear with valley cloud below 2000 m remaining. Northwest alpine wind 5 to 15 km/h.
Thursday
Becoming cloudy. Southeast alpine wind 10-20 km/h. Treeline temperature -8 °C.
Friday
Cloudy with isolated flurries continuing from the overnight period. Minimal accumulations. South alpine wind 15-25 km/h. Treeline temperature -7°C.
Saturday
Cloudy with flurries bringing 5-10 cm of new snow. Southwest alpine wind 30-50 km/h. Treeline temperature -8°C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Avoid areas where the snow feels stiff and/or slabby.
- Watch for areas of hard wind slab on alpine features.
- Early season avalanches at any elevation have the potential to be particularly dangerous due to obstacles that are exposed or just below the surface.
Problems
Wind Slabs
The base of the snowpack holds weak, faceted snow. Steep pockets of deeper, wind-loaded snow are the most likely to break away from this weak base with a human trigger.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Valid until: Nov 30th, 2023 4:00PM