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Avalanche Forecast

Archived

Dec 3rd, 2022–Dec 4th, 2022

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

Regions

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

Field data is limited for this region. If you head into the backcountry, please consider posting to the MIN as it helps strengthen our information gathering.

Confidence

Low

Avalanche Summary

No new natural avalanches were reported lately. There are limited reports and observations from this region. If you head into the backcountry this weekend, please submit a MIN report!

Snowpack Summary

Between 20 and 75 cm of recent snow sits on a melt-freeze crust. More significant amounts can be found in the western section of the region. Down 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 lacks cohesion due to early-season cold temperatures and shallow snowpack. At 1750 m, the snowpack depth is around 110 to 165 cm.

Early season hazards such as rocks and stumps still lurk below the surface. Below treeline and even into treeline elevations are still below the threshold for avalanches.

Weather Summary

An arctic ridge of high pressure will become the main attraction for the next few days. Sunny and dry conditions will last up to Tuesday night.

Saturday Night

Clear sky. No precipitation. Moderate easterly ridge wind. Low of -12 C at treeline and -5C in the alpine due to a temperature inversion.

Sunday

Sunny with cloudy periods. No accumulation. Moderate northeast ride wind. High of -10 C at treeline and -3 C in the alpine due to a temperature inversion.

Monday

Increasing cloudiness. Flurries in the afternoon. Light northeast ridge wind increasing during the day. High of -6 C at treeline.

Tuesday

Cloudy. Isolated flurries. Moderate southwest ridge wind. High of -5 C at treeline.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Seek out sheltered terrain where new snow hasn't been wind-affected.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.

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.