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Avalanche Forecast

Archived

Nov 27th, 2022–Nov 28th, 2022

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

Regions

South Coast, North Shore, Sasquatch, Sasquatch, Sky Pilot, Tetrahedron.

Assess conditions as you travel - any fresh snow is likely hiding early-season hazards.

Confidence

Low

Avalanche Summary

No new avalanches have been observed or reported in the region, however, observations are limited at this time of year. If you head into the backcountry consider submitting a MIN report.

Snowpack Summary

At the highest elevations, recent wind-affected snow covers a melt-freeze crust and moist upper snowpack.

Snowpack depths at upper elevations grow to 80 cm, where snow begins to cover surface roughness. The snow-dirt line is found around 1200 m, and most solar slopes and below treeline are below the threshold for avalanches.

Weather Summary

Sunday night

Cloudy with isolated flurries, clearing overnight. Moderate to light north wind, treeline low temperatures -10 C, and freezing level valley bottom.

Monday

Sunny and cold with patchy clouds. Light to moderate northeast wind, treeline high temperatures -5 C.

Tuesday

Cold, with a mix of sun and cloud. Light northwest wind, treeline temperatures around -8 C.

Wednesday

Incoming precipitation and wind, 20-40 mm, strong southwest wind, treeline temperatures rising to -2 C, freezing level rising above valley bottom.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for areas of hard wind slab on alpine features.
  • Exercise caution on steep, unsupported slopes.

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.