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Avalanche Forecast

Archived

Dec 2nd, 2022–Dec 3rd, 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 sheltered terrain that is less wind effected and where cold temps have softened the snow surface

Confidence

Low

Avalanche Summary

No new avalanches were reported in the past few days.

Thank you for all the great Mountain Information Network reports . They are much appreciated by our forecasters. Please keep them coming!

Snowpack Summary

The upper snowpack has been heavily wind effected, with hard wind slabs found on all aspects. Sustained cold temperatures has likely softening the snow surface in non wind effected terrain. An average of 65 to 90cm 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

Friday Night

Trace amounts of new snow expected. Winds moderate from the northwest at ridge top. temperatures around -24 at valley bottom. Possibility of a temperature inversion with temperatures at treeline around -15.

Saturday

Mostly clear with no new snow expected. Light winds from the northwest. Temperatures around -14 at valley bottom. Temperature inversion with temperatures at 1500m around -1.

Sunday

Mostly cloudy with light flurries bringing trace amounts of new snow. Light northerly winds. Temperature inversion with temperatures around -3 at 1500m and -11 at valley bottom.

Monday

A mix of sun and cloud with no new snow expected. Light to moderate westerly winds with a continued temperature inversion.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Recent wind has varied in direction so watch for wind slabs on all aspects.
  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.

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.