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Avalanche Forecast

Archived

Nov 26th, 2023–Nov 27th, 2023

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 unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

South Coast Inland, Birkenhead, Coquihalla, Duffey, Manning, Skagit, South Chilcotin, Stein, Taseko.

Isolated features at higher elevations may hold enough snow to be above threshold for avalanches but early season hazards are more concerning.

Confidence

Moderate

Avalanche Summary

No avalanches have been reported in the region yet this season. Please consider filling out a MIN report if you are out in the backcountry.

Snowpack Summary

The snow surface will likely become moist at treeline and below. In the far south of this region moist snow may be observed into the alpine.

No significant layers have been identified in this minimal snowpack, which is for the most part still below threshold depths for producing avalanches. Steep, isolated patches of wind-drifted snow could have the potential to produce small avalanches in alpine gullies and on smooth surfaces like rock slab.

Snow depths throughout the region range from about 30 to 60 cm at treeline, increasing with elevation. Some wind loaded spots may hold up to 90 cm.

Weather Summary

Sunday Night

Mostly clear skies with no new snow expected, 10 to 20 km/h southwest alpine wind, Above freezing layer starting around 1500 m.

Monday

Mostly clear skies with no new snow expected, 5 to 20 km/h southwest alpine wind, freezing level highly variable 1800 to 3000 m.

Tuesday

Mostly clear skies with no new snow expected, 5 to 20 km/h southwest alpine wind, freezing level around 2700 to 3000 m.

Wednesday

Mostly clear skies with no new snow expected, 5 to 10 km/h ridgetop wind, treeline temperature -6°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Expect shallow snow cover that barely covers ground roughness.
  • Avalanche danger is often elevated in alpine gullies where snow has accumulated.
  • Early season avalanches at any elevation have the potential to be particularly dangerous due to obstacles that are exposed or just below the surface.

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.