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Avalanche Forecast

Archived

Nov 27th, 2023–Nov 28th, 2023

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

North Rockies, Sugarbowl, McGregor, Pine Pass, Renshaw, Robson.

Assess local conditions, especially in the early season with limited observations.

The primary hazard continues to be a shallow snowpack with numerous obstacles just below the surface.

Confidence

Moderate

Avalanche Summary

No recent avalanches have been reported. Information from the field is limited at this time of year. If you are recreating in the mountains please consider submitting a MIN report.

Snowpack Summary

The snowpack is generally very shallow and contains many potential hazards just beneath the snow surface.

At higher elevations, deeper, wind-loaded pockets of snow may sit atop a weak, facetted basal snowpack. Exposed areas are wind scoured.

At treeline, the height of snow ranges from approximately 50 to 100 cm. As you descend to lower elevations, snow depths decrease significantly.

Weather Summary

Monday Night

Cloudy with isolated flurries, trace accumulation, southwest alpine winds 20 to 40 km/h, treeline temperature -4 °C.

Tuesday

Cloudy with isolated flurries, 3 to 6 cm in Torpy area, trace elsewhere in the region, west alpine winds 20 to 40 km/h, treeline temperature -3 °C.

Wednesday

Mix of sun and cloud with isolated flurries, trace accumulation, northwest alpine winds 10 to 20 km/h, treeline temperature -8 °C.

Thursday

Mainly sunny with no precipitation, southeast alpine winds 10 km/h, treeline temperature -10 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Expect shallow snow cover that barely covers ground roughness.
  • Fresh wind slabs will likely form throughout the day, diligently watch for changing conditions.
  • Winter conditions may exist in gullies, alpine bowls, and around ridgelines.
  • Avalanche danger is often elevated in alpine gullies where snow has accumulated.

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.