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Avalanche Forecast

Archived

Nov 30th, 2023–Dec 1st, 2023

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

Regions

North Columbia, South Columbia, Esplanade, Jordan, North Selkirk, Crawford, West Purcell, Badshot-Battle, Central Selkirk, Goat, Gold, Kokanee, Retallack, Valhalla, Whatshan.

Early season hazards will be tougher to manage with grey skies and flurries in the forecast. Don't let poor visibility lead you into problematic terrain.

Confidence

Moderate

Avalanche Summary

A few natural size two wind slab avalanches were reported last week at higher elevations. Little more is expected until it snows again.

Observations are limited this time of year. Please consider filling out a MIN report if you do head out in the backcountry! 🙏

Snowpack Summary

Surface conditions are a mix of large surface hoar topping 10-20 cm of faceting storm snow in shaded, sheltered areas, sun crust on steep south and west-facing slopes, and wind effect in exposed terrain at treeline and above.

A crust with sugary facets beneath it can be found just above the ground.

Expect early-season conditions with a shallower-than-average snowpack. Coverage is reportedly poorest in the alpine and below treeline. At treeline, depths are between 60-100 cm.

Weather Summary

Thursday Night

Cloudy with isolated flurries and minimal accumulations. Southeast alpine wind 15-25 km/h.

Friday

Cloudy with isolated flurries continuing from the overnight period. Still minimal accumulations. South or southwest alpine wind 15-25 km/h. Treeline temperature -8°C.

Saturday

Cloudy with flurries continuing from overnight and bringing 10-15 total cm of new snow. South or southwest alpine wind 30-50 km/h. Treeline temperature -7°C.

Sunday

Cloudy with snowfall bringing 10-15 cm of new snow. South alpine wind 50-60 km/h. Treeline temperature -4°C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid areas where the snow feels stiff and/or slabby.
  • Watch for areas of hard wind slab on alpine features.
  • Early season avalanches at any elevation have the potential to be particularly dangerous due to obstacles that are exposed or just below the surface.

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.