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Avalanche Forecast

Archived

Dec 9th, 2022–Dec 10th, 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.
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 with the deepest snow that hasn't been wind-affected.

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.Upper-pack: Below the fresh snow is well developed surface hoar in sheltered areas. The uppper 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

Friday NightIncoming system bringing ~5 cm snow overnight with light to moderate southerly wind. Temperatures around -5 to -10 C at treeline and higher.

SaturdayA few more cm of snow. Steady temps around -5 C up in the mountains. Light to moderate southerly winds.

Sunday

Dry. Light wind from the northwest. Steady temps around -5 C and colder at treeline and higher. Mostly cloudy.

Monday

Clearing. Dry. Temps cooler at around -10 C at treeline. Light northerly wind.

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.
  • 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.
  • 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.