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Avalanche Forecast

Archived

Dec 22nd, 2022–Dec 23rd, 2022

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

South Coast Inland, Birkenhead, Duffey, South Chilcotin, Stein, Taseko.

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.

Problems

Deep Persistent Slabs

Deep Persistent Slab avalanches are the release of a thick cohesive layer of hard snow (a slab), when the bond breaks between the slab and an underlying persistent weak layer deep in the snowpack. The most common persistent weak layers involved in deep, persistent slabs are depth hoar or facets surrounding a deeply buried crust. Deep Persistent Slabs are typically hard to trigger, are very destructive and dangerous due to the large mass of snow involved, and can persist for months once developed. They are often triggered from areas where the snow is shallow and weak, and are particularly difficult to forecast for and manage.