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Avalanche Forecast

Archived

Dec 1st, 2022–Dec 2nd, 2022

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

Regions

South Coast Inland, Coquihalla, Harrison-Fraser, Manning, Stein.

Wind slabs have developed as the wind continues to transport low-density snow. Seek sheltered areas where the snow has not been wind-affected.

Early season hazards continue to pose a threat and are lurking just below the surface.

Confidence

Low

Avalanche Summary

A few small loose dry avalanches have been reported in the region. These have mostly been in the alpine and treeline elevations. If you head into the backcountry consider submitting a MIN report.

Snowpack Summary

At around 1750 m the snowpack sits at 110 to 170 cm. The top layer of light snow ranges between 20 to 80 cm with greater amounts towards the west. This new snow is sitting on a melt-freeze crust. Further down into the snowpack, 80 to 90 cm, there is a series of crust layers. The bond between these layers and the snow beneath them has been weak to moderate in strength. Near the ground, the snow is not bonding well due to early-season cold temperatures and shallow snow.

Terrain features still lurk below the surface. Below treeline and even into treeline elevations are still at below the threshold for avalanches.

Weather Summary

Thursday Night

Cloudy with clear periods, no cm accumulation, winds northwest 10 km/h, temperatures -15 to -20 C at 1500 m.

Friday

Cloudy with sunny periods, no accumulation, winds southwest light gusting to 30 km/h, temperatures -10 C at 1500 m.

Saturday

Mostly cloudy, 5 cm accumulation, winds northeast 15 km/h, temperatures -10 C with a temperature inversion and -5 C at 2000 m.

Sunday

Sunny with cloudy periods, no accumulation, winds northeast 10 to 20 km/h, temperatures -10 C at 1000 m and 0 to -5 C at 2000 m due to the temperature inversion.

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.
  • Be carefull around freshly wind loaded features.
  • Seek out sheltered terrain where new snow hasn't been wind-affected.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.