Avalog
Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Register
Login
Archived

Avalanche Forecast

Feb 18th, 2021–Feb 19th, 2021
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Banff Yoho Kootenay.

Winds are forecasted to increase on Friday so expect to see more wind-slab development  above tree-line.

Weather Forecast

Overnight lows still chilly (-15-18) but day time highs at valley bottom rising to -8 through Saturday. Friday will be overcast with only scattered flurries and alpine winds rising to 50 km/h. Sunday will see a change with some models forecasting 20-30 cm of snow and strong SW winds.

Snowpack Summary

Extensive wind effect and isolated, thin wind-slabs throughout the alpine. At tree-line and below the snowpack is well settled except the surface snow which is facetted and sluffs in steep terrain. A facet and sun crust layer buried Jan 27 persists at treeline down 30-40 cm.

Avalanche Summary

Lake Louise SKi Hill reported a skier triggered size 1 wind slab (30 cm deep) out of steep north facing alpine terrain. Otherwise no significant slab avalanche activity reported or observed over the past 5 days. Sluffing of the facetted surface snow continues to happen in very steep areas.

Confidence

Avalanche Problems

Wind Slabs

Stronger winds on Friday will add to the wind effect in the alpine and create small wind-slabs in lee terrain.

  • Pay attention to overhead hazards like cornices which could trigger slabs.
  • Use caution in lee areas. Recent wind loading has created wind slabs.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely

Expected Size: 1 - 1.5