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Avalanche Forecast

Archived

Feb 10th, 2021–Feb 11th, 2021

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

Jasper.

If you must travel in the Back Country: keep objectives short, and close to home. Small injuries will have serious consequences with the present temperatures.

Weather Forecast

Coldest recorded temps (so far;): Maligne, -40.5; Parkers Ridge, -34.9 (Feb. 9 @ 0100! Mercifully, we haven't reached any lower.

Tonight: Cloudy with clear periods. Precipitation: Nil. Alpine temperature: Low -33 C. Light ridge wind.

Thursday: Sunny with cloudy periods. Precipitation: Nil. Alpine temperature: High -25 C. Light ridge wind.

Snowpack Summary

The cold has deeply penetrated the snowpack, promoting profound facetting in the upper 40cm. This will slow any slab development on the recent storm snow. The mid-pack has remained strong but, will loose strength over time with the prolonged arctic influence, especially where shallow.

Avalanche Summary

A few brave souls out reporting good, but slow skiing conditions. Numerous loose dry, point releases reported from the Alpine as the cold continues to breakdown the supporting surface structure of the snowpack.

Confidence

Wind effect is extremely variable

Problems

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.

Cornices

Cornice Fall is the release of an overhanging mass of snow that forms as the wind moves snow over a sharp terrain feature, such as a ridge, and deposits snow on the downwind (leeward) side. Cornices range in size from small wind drifts of soft snow to large overhangs of hard snow that are 30 feet (10 meters) or taller. They can break off the terrain suddenly and pull back onto the ridge top and catch people by surprise even on the flat ground above the slope. Even small cornices can have enough mass to be destructive and deadly. Cornice Fall can entrain loose surface snow or trigger slab avalanches.