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Avalanche Forecast

Archived

Dec 2nd, 2024–Dec 3rd, 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.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Cariboos, North Columbia, Blue River, Clearwater, Premier, Quesnel, Clemina, Esplanade, Jordan, North Monashee, North Selkirk.

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

Wind slabs are most reactive during their formation

Confidence

Moderate

Avalanche Summary

A MIN report from the Gorge near Revelstoke noted obvious wind effect in exposed areas, and loose dry sluffing in steep and sheltered terrain.

We expect continued winds and mild temperatures to build fresh and reactive wind slabs, likely sensitive to human triggers.

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. Warmer temperatures will likely affect the surface snow and may produce a crust overnight.

Overall, the snowpack is generally well-bonded and settled with crusts present in the mid to lower snowpack. Snow depths at treeline range from 80 to 150 cm, with depths rapidly tapering off at lower elevations.

Weather Summary

Monday Night

Partly cloudy. 30 to 50 km/h west ridgetop winds. Treeline temperatures around -5 °C.

Tuesday

Mostly cloudy. 5 cm possible for the Cariboos. 20 to 40 km/h southwest ridgetop wind. The above freezing layer brings treeline temperatures around 0 °C.

Wednesday

Cloudy with isolated flurries possible for the Cariboos. Sunnier skies further south. 20 to 40 km/h southwest ridgetop wind. The above freezing layer brings treeline temperatures around 0 °C.

Thursday

Mostly cloudy. 40 to 60 km/h southwest ridgetop wind. The above freezing layer brings treeline temperatures around 0 °C.

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.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.

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.