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Avalanche Forecast

Archived

Dec 6th, 2024–Dec 7th, 2024

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

Regions

Cariboos, North Columbia, South Columbia, Blue River, Clearwater, Quesnel, Clemina, Esplanade, Jordan, North Monashee, North Selkirk, Shuswap, Gold, North Okanagan.

Avoid avalanche terrain.

Large natural and human triggered avalanches are likely.

Confidence

Moderate

Avalanche Summary

One size 1.5 natural wind slab avalanche was observed on a steep north facing alpine feature on Thursday.

Several wet loose avalanches up to size 2 were observed on steep south facing terrain on Thursday as well.

Snowpack Summary

By the end of the day on December 7th up to 50 cm of new snow may have fallen. This new snow will overlie a variety of surfaces including a sun crust on steep south aspects and Surface hoar on northerly aspects.

The mid snowpack is generally well settled, with an early November crust buried 50 to 100 cm deep.

Snow depths at treeline range from 100 to 170 cm and decrease quickly at lower elevations.

Weather Summary

Friday Night

Cloudy with up to 30 cm of snow expected.  40 to 60 km/h southwest ridgetop wind. Treeline temperature -4°C.

Saturday

Cloudy with 10 to 20 cm of snow expected, rain possible at lower elevations. 30 to 50 km/h southwest ridgetop wind. Treeline temperature -2 °C.

Sunday

Mostly cloudy with isolated flurries. 20 to 30 km/h west ridgetop wind. Treeline temperature -6 °C.

Monday

Mostly cloudy with trace amounts of snow possible. 15 to 30 km/h northwest ridgetop wind. Treeline temperature -7°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for fresh storm slabs building throughout the day.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Be aware of the potential for large avalanches due to buried surface hoar.

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.