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Avalanche Forecast

Archived

Dec 23rd, 2024–Dec 24th, 2024

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

Regions

South Coast Inland, Birkenhead, Duffey, South Chilcotin, Stein, Taseko.

Storm slabs may remain sensitive to human triggering, particularly on steep lee slopes (north to east) near ridgetops.

Confidence

Moderate

Avalanche Summary

Riders reported shooting cracks and small reactive wind slabs near Vantage Ridge on Sunday, check out the MIN here.

On Thursday, a rider-triggered size 2 persistent slab avalanche was reported. This avalanche was on an east aspect at 2100 m. It released on the layer of surface hoar mentioned in the snowpack summary below.

Looking forward, we expect small storm slabs to remain reactive to human triggers, particularly at upper elevations and on lee slopes.

Snowpack Summary

20 to 35 cm of storm snow has accumulated in the alpine since last Saturday. Another 5 to 20 cm are expected to fall overnight and throughout the day Tuesday.

Strong southerly winds are expected to form deeper deposits on north-facing slopes.

A crust or moist surface snow are expected at lower elevations.

40 to 90 cm of snow overlies a crust on south aspects and all aspects below 1800 m from early December. A layer of surface hoar could be found just above this layer in sheltered terrain at treeline.

Snow depths at treeline are around 90 to 140 cm. You can check out a snowpack conditions update here.

Weather Summary

Monday NightCloudy with 5 to 15 cm, falling as snow above 1500 m. 20 to 40 km/h south ridgetop wind. Treeline temperature 0 °C.

TuesdayCloudy with 0 to 5 cm, falling as snow above 1400 m. 40 to 50 km/h southwest ridgetop wind. Treeline temperature -1 °C.

Wednesday

Cloudy with 0 to 3 cm, falling as snow above 1300 m. 45 to 55 km/h south ridgetop wind. Treeline temperature -1 °C.

Thursday

Cloudy with 2 to 7 cm, falling as snow above 1000 m 15 to 30 km/h southwest ridgetop wind. Treeline temperature -2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Keep your guard up as storm slabs may remain sensitive to human triggering.
  • Be alert to conditions that change with elevation, aspect, and exposure to wind.
  • Be aware of the potential for large avalanches due to buried weak layers.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.