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Archived

Avalanche Forecast

Mar 3rd, 2018–Mar 6th, 2018
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
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.

Watch out for wind slabs when the Waterton Winds return.

Weather Forecast

Expected moderate SW winds arriving late Sunday through Tuesday. Day time temperatures between -4 and -10.

Snowpack Summary

New snow is adding to Waterton's significant snow pack. The mid-layer is well settled, but overlies a sleeping dragon as a deep persistent layer at the bottom of the snow pack.

Avalanche Summary

Several loose dry avalanches noted on steep terrain.

Confidence

Wind effect is extremely variable on Monday

Avalanche Problems

Loose Dry

Use caution above cliffs where small avalanches may have severe consequences.Avoid terrain traps, such as gullies, where the consequences of a small avalanche could be serious.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Very Likely

Expected Size: 1 - 1.5

Deep Persistent Slabs

No recent avalanches have been observed on this facet layer but this is the sleeping dragon.
Pay attention to overhead hazards like cornices which could easily trigger deep slabs.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely

Expected Size: 2 - 4

Wind Slabs

With forecasted winds expected to rise Sunday night, we can expect the new snow to form wind slabs.
Minimize overhead exposure during periods of heavy loading from new snow, wind.Use caution in lee areas. Recent wind loading have created wind slabs.

Aspects: North, North East, East, South East.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2