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Archived

Avalanche Forecast

Dec 26th, 2024–Dec 27th, 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
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Glacier.

Steady snow and wind have created windslabs in the alpine and exposed areas at treeline. Use caution as you transition into wind affected terrain.

The best snow quality still exists in wind sheltered areas.

Confidence

Moderate

Avalanche Summary

There was a small natural avalanche cycle overnight in steep start zones that was likely triggered by a wind spike.

Reports have been trickling in of wind effect and shooting cracks in alpine terrain. The operations around us are also reporting a mix of wind slab and stormslabs as well as sluffing in steep terrain.

Snowpack Summary

Continuous snowfall the past week has brought 90+cm. Mod to strong S/SW winds formed a reactive wind slab in specific features (ridge lee areas, open cross-loaded slopes, convex rolls).

Sheltered slopes hold excellent skiing.

A persistent weak layer is down 90-120cm. This interface is breaking down, but consists of surface hoar in sheltered locations, and a sun crust on solar aspects. The snowpack's base is comprised of several early-season melt-freeze rain crusts

Weather Summary

A series of low intensity storms will affect the region over the next few days.

Tonight Isolated flurries, trace amounts, Alp low -8°C, South winds 30 km/h, freezing level (FZL) 900m.

Fri Sun/cloud/flurries, trace snow, Alp High -7°C, light wind gusting 30km/h, FZL 1000m.

Sat Flurries, 10cm, Alp High -5°C, SW winds 35-40km/h, FZL 1200m

Sun Flurries, Trace snowfall, Alp High -7°C, winds light SE, FZL 1100m.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Wind slabs are most reactive during their formation.

Avalanche Problems

Wind Slabs

Steady snowfall this past week has left plenty of snow available for transport. Moderate/strong gusty winds will continue to refresh these slabs. This avalanche problem will be most reactive in the alpine and exposed areas at tree line.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2