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Archived

Avalanche Forecast

Dec 22nd, 2022–Dec 23rd, 2022
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
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

The snowpack is generally weak, facetted, and lacks cohesion. Assess for surface instabilities that have the potential to step down to deeper weak layers.

Confidence

Moderate

Avalanche Summary

No notable recent avalanches have been reported.

Please continue to post your observations and photos to the Mountain Information Network.

Snowpack Summary

The snowpack is unusually shallow and has a layer deep in the snowpack made up of weak facets and depth hoar. At lower elevations and shallower areas, the snowpack remains mostly unconsolidated.

The height of snow is roughly 50 to 200 cm at treeline.

Weather Summary

Thursday night

Cloudy with light snow, up to 5 cm. Temperatures -10 to -20 C and mostly light SW winds in the alpine.

Friday

Cloudy with a trace of snow. Temperatures of -5 to -15 C, and moderate southwest winds in the alpine.

Saturday

Cloudy with snow, up to 10 cm. Temperatures 0 to -5 C and strong south winds in the alpine.

Sunday

Cloudy with light snow, up to 5cm. Temperatures 0 to -5 C and strong south winds in the alpine.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
  • If triggered, loose dry avalanches may step down to deeper layers resulting in large avalanches.
  • This avalanche problem is difficult to trigger but if so, consequences are serious.

Avalanche Problems

Deep Persistent Slabs

Much of the lower snowpack is made up of weak, unconsolidated facets and depth hoar crystals. Steer clear of large slopes with a cohesive slab on the surface, likely created by previous wind loading. Any small avalanche or sluff in steep terrain has the potential to step down to this deeper layer, resulting in a large avalanche.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1.5 - 3