Avalanche Forecast
Regions: Waterton Lakes.
Weather Forecast
Moist, mild Pacific air collides with a cold Arctic High. Forecasts predict anywhere from 40-140cm of snowfall by Monday evening. Alpine winds are mainly moderate SW. Temperatures will drop as the arctic air re-establishes itself Monday in to Tuesday, winds will remain light and variable at all but the upper elevations.
Snowpack Summary
Up to 80cms and counting (60-80cm more is forecast) with light-moderate wind, this overlies: wind-hardened snow exposed areas, near surface facets in sheltered areas, and a melt-freeze crust below 2000m on solar aspects. The lower snowpack facets remain as a persistent concern and have produced isolated Sudden results in snowpack tests.
Avalanche Summary
Nearby operations reported a widespread storm slab problem yesterday, which was easily triggered by skiers and explosives.
Confidence
Forecast snowfall amounts are uncertain
Avalanche Problems
Storm Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood: Very Likely
Expected Size: 2 - 3
Deep Persistent Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood: Possible
Expected Size: 3 - 4
Loose Dry
Aspects: All aspects.
Elevations: All elevations.
Likelihood: Very Likely
Expected Size: 1 - 2