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Avalanche Forecast

Archived

Dec 16th, 2024–Dec 17th, 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, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

North Rockies, Sugarbowl, East Kakwa, Kakwa, McGregor, Pine Pass, Renshaw, Robson, Tumbler.

Look for areas to ride where the surface snow is powdery.Avoid areas where the surface snow feels stiff and board-like, that is where wind slab avalanches could happen.

Confidence

Moderate

Avalanche Summary

Natural wind slab avalanches have been reported to size 2 as well as a size 1 human triggered avalanche. Avalanches were in the alpine and treeline in the powder king area.

Data is very limited in this region. Please submit your MIN (Mountain Information Network)

Snowpack Summary

15 to 30 cm fresh snow accumulated over the weekend. At upper elevations, wind has redistributed snow to lee features.

The recent snow overlies a hard melt-freeze crust. There are no deeper layers of concern.

Data is very limited in this region.

Weather Summary

Monday night

Mostly cloudy. 10 to 20 km/h west ridgetop winds. Treeline temperature -17 °C.

Tuesday

Cloudy with sunny breaks. 20 to 30 km/h southwest ridgetop winds. Treeline temperature -15 °C.

Wednesday

Mostly cloudy. Flurries, 5 cm. 30 to 50 km/h west ridgetop winds. Treeline temperature -8 °C.

Thursday

Mix of sun and cloud. 20 to 30 km/h west ridgetop winds. Treeline temperature -8 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • The best and safest riding will be on slopes that have soft snow without any slab properties.
  • 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.