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Archived

Avalanche Forecast

Feb 20th, 2020–Feb 21st, 2020
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Little Yoho.

We have phased out the deep persistent facets as a problem in this region due to the overall deeper snowpack and lack of recent deep avalanches. Watch for isolated thin areas where facets may be present. Excellent ski conditions overall.

Weather Forecast

Friday will be mainly cloudy with isolated flurries and periods of sun. The temperature inversion is forecasted to weaken with an alpine high of -9. The winds will remain moderate to strong from the SW. 5-10cm of snow is forecasted throughout the day on Saturday.

Snowpack Summary

Fresh wind slab development and continued cornice growth in the alpine. Sun crust formation on steep S and SW facing terrain. Overall the deep snowpack (observed as 3m+ in some areas) is strong in Little Yoho with no significant shear test results.

Avalanche Summary

Reports of wind slabs up to size 1.5 today along the Icefields Parkway in loaded pockets in the alpine.

A size 2.5 skier remote was reported Wednesday on the scramblers route of Cascade Mountain on a steep SW slope in the alpine, no involvement.

Confidence

Avalanche Problems

Wind Slabs

Consistent moderate SW winds continues to build fresh wind slab in the alpine and remains possible to trigger. Cornices have grown very large in recent weeks, so watch your exposure to them carefully.

  • Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2.5