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Archived

Avalanche Forecast

Dec 26th, 2021–Dec 29th, 2021
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Waterton Lakes.

Ridgetop winds are forecasted to increase tomorrow afternoon and there is lots of snow available for transport. Be on the lookout for windsalbs developing throughout the day.

Weather Forecast

Monday: Partially cloud with a chance of flurries in afternoon. Cold temps rising slightly to a balmy -18 throughout the day.

Tuesday: Partially cloud with a chance of flurries in afternoon. High -15.

Wednesday: Clearing with the return of cold temps High -18 Low -27.

Snowpack Summary

90-60 cm of unconsolidated storm snow sits atop previous windslabs 40-60 cm thick .This overlies facets above the Dec 4 crust. A 20-60 cm thick Nov MFcr complex completes the snowpack to ground. HS at TL is 130 - 180.

Avalanche Summary

No new avalanches reported in park with very limited visibility in the last few days. If you go out into the mountains please share your observations on the Mountain Information Network.

Confidence

Wind speed and direction is uncertain

Avalanche Problems

Storm Slabs

90-60 cm of light unconsolidated snow running as dry loose avalanche.

  • Be careful of loose dry power sluffing in steep terrain.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Very Likely

Expected Size: 1 - 2.5

Persistent Slabs

No avalanches observed on this layer this week, however with a large enough trigger this layer could produce results.

  • If triggered the storm/wind slabs may step down to deeper layers resulting in large avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3