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Avalanche Forecast

Archived

Dec 19th, 2024–Dec 20th, 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, human triggered possible.
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 Rockies, Sugarbowl, East Kakwa, Kakwa, McGregor, Pine Pass, Renshaw, Robson, Tumbler.

Avoid areas that have received recent snow from wind loading.

The best and safest riding will be in areas sheltered from the wind.

Confidence

Low

Avalanche Summary

On Wednesday there were reports of small dry loose avalanches. No slabs were reported.

A skier triggered a small wind slab on Tuesday, on a north aspect at treeline.

Data is very limited in this region. Please submit a report on the Mountain Information Network. Even a simple photo is a huge help to other backcountry users.

Snowpack Summary

In sheltered spots up to 30 cm of snow is sitting on a melt-freeze crust from early December. At upper elevations, wind has redistributed snow to lee features.

In some areas, freezing rain has been reported on top of the new snow creating a crust. As well as surface hoar that was buried yesterday.

There are no deeper layers of concern.

Data is very limited in this region.

Weather Summary

Thursday Night

Cloudy with 10 to 15 cm of snow. 25 to 40 km/h southwest ridgetop wind. Treeline temperature -3 °C.

Friday

Mostly cloudy. 30 to 40 km/h southwest ridgetop wind. Treeline temperature -3 °C.

Saturday

A mix of sun and cloud with 2 cm in the morning. 25 to 40 km/h west ridgetop wind. Treeline temperature 0 °C.

Sunday

Sunny. 40 to 60 km/h south ridgetop wind. Treeline temperature -2 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Avoid slopes that sound hollow or drum-like.

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.