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Avalanche Forecast

Archived

Dec 4th, 2022–Dec 5th, 2022

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Below Threshold.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Below Threshold.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Below Threshold.

Regions

Yukon, Tutshi, Wheaton, White Pass East, White Pass West.

After many windy and cold days, the best riding is likely in terrain sheltered from the wind.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported, but observations are limited this time of year. If you do head into the backcountry please submit a MIN report!

Snowpack Summary

The upper snowpack has been heavily wind affected, with hard wind slabs found on all aspects. Sustained cold temperatures have likely softened the snow surface in wind-sheltered terrain. Roughly 70 to 90 cm can be found at treeline in White Pass. Upwards of 100 cm may exist in wind-loaded areas. The lower snowpack consists of soft, sugary facets and a crust near ground level.

Weather Summary

Sunday night

Partly cloudy, no precipitation, 20 km/h wind from the northwest, alpine temperatures around -6 °C.

Monday

Mostly cloudy, no precipitation, 20 to 30 km/h wind from the northwest, mild inversion with alpine temperatures around -2 °C.

Tuesday

Cloudy, isolated flurries with trace amounts of snow, 30 to 40 km/h wind from the southwest, alpine temperatures around -8 °C.

Wednesday

Cloudy, scattered flurries with 5 to 10 cm of snow, 40 to 60 km/h wind from the south, alpine temperatures around -6 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • The best and safest riding will be on slopes that have soft snow without any slab properties.
  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.