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Archived

Avalanche Forecast

Jan 5th, 2025–Jan 6th, 2025
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

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

Increasing winds and flurries starting Monday afternoon - watch for fresh slabs building at the end of the day.

Confidence

Moderate

Avalanche Summary

The most recent avalanche reports are from last Wednesday (MIN reported whumping and shooting cracks) and Tuesday (size 2 avalanche on a north aspect at 1300 m, 20-30 cm deep and failing on facets above a crust - see photo below)

Reports have been limited (it's also been really cold). If you head out in the mountains, please share your observations on the Mountain Information Network.

Snowpack Summary

Recent outflow winds have scoured windward faces in the alpine and loaded lee slopes. Up to 20 cm of soft snow can be found in sheltered areas.

The primary layer of concern is weak facets and in some cases surface hoar, overlying a crust. The interface is now buried 20 to 30 cm deep and extends up to 1750 m.

Despite the presence of faceted grains in the lower snowpack, there are no current layers of concern below the crust. 

Snowpack depths range from about 70 to 180 cm.

Weather Summary

Sunday night

Cloudy with isolated flurries, trace to 5 cm. 30, gusting to 60 km/h southwest ridgetop wind. Treeline temperature -16°C.

Monday

Cloudy with flurries starting late in the day, up to 10 cm. 40 to 80 km/h south ridgetop wind. Treeline temperature -10°C.

Tuesday

Cloudy with isolated flurries, 10 to 30 cm. 30 to 60 km/h southwest ridgetop wind. Treeline temperature -4°C.

Wednesday

Cloudy with isolated flurries, 5 cm. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -6°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Keep in mind a buried crust offers an excellent bed surface for avalanches.

Avalanche Problems

Persistent Slabs

A crust with weak crystals overtop is buried 20 to 30 cm. This problem is specific to where a cohesive slab has formed, such as wind-loaded features. Snowfall and high winds are forecast. Expect fresh slabs building in wind-loaded terrain.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2