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Avalanche Forecast

Archived

Dec 11th, 2022–Dec 12th, 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, Birkenhead, Duffey, South Chilcotin, Stein, Taseko.

For the best riding seek out sheltered slopes where the recent storm snow hasn't been wind-affected.

Watch for changes in the upper snowpack if the wind picks up or the sun comes out.

Confidence

Moderate

Avalanche Summary

No new avalanche reports. Keep sharing your observations via the MIN; it helps strengthen our information gathering.

Snowpack Summary

In deeper zones at 1900 m the snowpack is around 100-130 cm, which is low for middle of December, and it has a weak structure.

Surface: Boot top powder in deep areas. Same old crusts, facets, and rocks on wind scoured slopes. Wind slab pockets lee of ridges.Upper-pack: Below the fresh snow is well developed surface hoar in sheltered areas. The upper part of the snow pack is generally low density and faceting (aka weak).Mid-pack: maybe a crust or two, with a layer of soft facets above. This is likely the primary weak layer.Lower-pack: facets and depth hoar (aka not strong).

Weather Summary

Sunday night

Clear periods. Alpine temperatures reach a low of -10 °C. Ridge wind northeast 15 km/h. Freezing level at valley bottom.

Monday

Sunny with cloudy periods. Alpine temperatures reach a high of -4 °C. Ridge wind light to 15 km/h. Freezing level at valley bottom.

Tuesday

Cloudy with sunny periods. Alpine temperatures reach a high of -2 °C. Ridge wind north 10 km/h. Freezing level rising to 1500 metres.

Wednesday

A mix of sun and cloud. Alpine temperatures reach a high of 1 °C. Ridge wind north 15 km/h. Freezing level rising to 1800 metres.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • The best and safest riding will be on slopes that have soft snow without any slab properties.
  • Stay off recently wind loaded slopes until they have had a chance to stabilize.
  • Expect shallow snow cover that barely covers ground roughness.

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.