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Archived

Avalanche Forecast

Dec 30th, 2020–Dec 31st, 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
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
3: Considerable
The avalanche danger rating in the alpine will be considerable
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.

The odd windslab still lingers in alpine lee areas. The persistent and deep persistent problems may re-appear with incoming snow load on the weekend.

Weather Forecast

Very light snow expected Wednesday. Forecasted winds are extremely variable and uncertain in terms of velocity, but the flow will be Westerly. The ridge is expected to be roughly -10 and the valley -5. More significant snow, upwards of 20cm, is expected late Friday.

Snowpack Summary

The snow surface conditions are soft, dry snow with isolated areas of wind effect at high elevations. The Dec 13 and Dec 7 sun crust/surface hoar/facet layers are down ~ 50cm and ~80 cm respectively and are strengthening. The decomposing Nov crust/facets sits at the bottom of the snowpack. Height of snow at tree line is 120-170cm.

Avalanche Summary

Lake Louise patrollers reported triggering size 1 wind slabs in lee areas with explosives. Similarly, Sunshine patrollers we cutting small soft slabs out of immediate lee areas in the alpine. No other avalanches were observed or reported.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Saturday

Avalanche Problems

Wind Slabs

Small windslabs might be found in steep, unsupported terrain in alpine areas. Use ski cuts to check locations before committing, the conditions are stable now but the odd windslab keeps getting reported.

  • Watch for shooting cracks or stiffer feeling snow. Avoid areas that appear wind loaded.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2