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Avalanche Forecast

Archived

Dec 1st, 2024–Dec 2nd, 2024

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
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 Columbia, South Okanagan, Shuswap, Dogtooth, West Purcell, Badshot-Battle, Central Selkirk, Goat, Gold, North Okanagan, Retallack, Valhalla, Whatshan.

Monitor surface conditions as you travel, especially as you transition into wind affected terrain.

Confidence

Moderate

Avalanche Summary

Wind slabs continue to linger in the region, with reports indicating they are stubborn to rider triggering. On Saturday slabs were triggered on west and northeast aspects, at treeline and alpine elevation.

Forecast warm temperatures may increase reactivity of slabs.

Observations remain limited this early in the season. If you head into the backcountry, please post to the Mountain Information Network.

Snowpack Summary

Surface conditions vary from wind affected surfaces in exposed terrain at higher elevations, and settling snow in sheltered areas that may include a layer of surface hoar buried 5 to 10 cm deep.

The mid snowpack is generally well settled, with an early November crust buried 50 to 100 cm deep. This layer is understood to be more notable in the Selkirk Mountains.

Snow depths at treeline are roughly 80 to 150 cm, and decrease rapidly at lower elevations.

Weather Summary

Sunday Night

Partly cloudy. 10 to 30 km/h northwest ridgetop wind. Treeline temperatures around -10 °C.

Monday

Mostly sunny. 10 to 30 km/h west ridgetop wind. An above freezing layer will bring treeline temperatures to 0 °C.

Tuesday

Mostly sunny. 10 to 30 km/h west ridgetop wind. The above freezing layer holds treeline temperatures at 0 °C.

Wednesday

Partly cloudy. 20 to 30 km/h west ridgetop wind. The above freezing layer holds treeline temperatures at 0 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Wind slabs are isolated, but may remain reactive.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Seek out sheltered terrain where new snow hasn't been affected by wind.

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.