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Avalanche Forecast

Archived

Dec 12th, 2025–Dec 13th, 2025

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.

It's cold, it's windy. Keep in mind that small mistakes can have dire consequences in these conditions.

Confidence

Moderate

Avalanche Summary

There have been no recent reports of avalanches.

Observations are limited this time of year. Be sure to verify conditions as you go.

If you are getting out in the backcountry, consider sharing your observations on the Mountain Information Network (MIN)!

Snowpack Summary

Surfaces are stiff with sastrugi in wind-exposed terrain. Wind slab reactivity is subsiding due to faceting under the influence of cold temperatures. Very sheltered terrain such as dense tree cover may still hold soft snow.

An average snowpack depth of 110 cm in the alpine tapers with elevation to around 60 cm at the White Pass highway elevation, where early season hazards lurk just under the surface.

Weather Summary

Friday night
Increasing cloud. 60 km/h northeast outflow wind. Treeline temperature -30 °C. Inversion developing in the afternoon; -15 °C in the high alpine.

Saturday
Mostly cloudy. 1 cm of snow. 70 km/h east outflow wind. Treeline temperature -25 °C.

Sunday
Mostly cloudy. 3 cm of snow. 50 km/h northeast outflow wind. Treeline temperature -26 °C.


Monday
Mostly cloudy. 5 cm of snow. 50 km/h northeast outflow wind. Treeline temperature -26 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Back off if you encounter whumpfing, hollow sounds, or shooting cracks.
  • Make observations and continually assess conditions as you travel.

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.