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Avalanche Forecast

Dec 2nd, 2024–Dec 3rd, 2024
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
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
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.

Recent snow and wind have likely formed reactive slabs and may bond poorly to old surfaces. Assess and verify conditions as you travel.

Confidence

Low

Avalanche Summary

No new avalanches have been reported.

Early season observations are very limited. Please consider sharing your observations with forecasters and the backcountry community through the Mountain Information Network.

Snowpack Summary

20 to 30 cm of recent snow and moderate southwest winds are likely forming reactive windslabs in leeward terrain.

In the alpine and exposed areas at treeline, this new snow covers hard, wind-affected surfaces. In lower elevation sheltered trees, it sits over weak surface hoar and facets.

The remainder of the snowpack is generally strong, with some crusts near the base.

Snow depths vary significantly across the region, with about 50 cm at treeline and up to 100 cm in alpine areas.

Weather Summary

Monday night

Cloudy with up to 5 cm of snow. 30 to 50 km/h south ridgetop wind. Treeline temperature -7°C, temperature inversion with -5°C above 1800 m.

Tuesday

Cloudy with 3 to 7 cm of snow. 40 to 60 km/h south ridgetop wind. Treeline temperature -7°C, temperature inversion with -3°C above 1800 m.

Wednesday

Mostly cloudy with 2 to 5 cm of snow. 60 to 80 km/h ridgetop wind. Treeline high 2 °C.

Thursday

Mostly cloudy with 5 to 10 cm of snow. 40 to 70 km/h ridgetop wind. Treeline high 1°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Make observations and continually assess conditions as you travel.
  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
  • Use small, low consequence slopes to test the bond of the new snow.

Avalanche Problems

Wind Slabs

In wind exposed areas, avalanches will be more likely on leeward slopes. In sheltered areas, the likelihood of avalanches will depend on how a potentially weak layer of facets or surface hoar reacts to the new load.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2