Avalanche Forecast
Regions: Jasper.
Weather Forecast
A strong ridge of high pressure dominates the North & Central Rockies until Wednesday, dragging cold air down from Alaska. Tuesday: Sunny with cloudy periods developing in the PM. Low of -23 C and High of -18 C with light winds from the North.A detailed mountain weather forecast is available from Avalanche Canada.
Snowpack Summary
50cm recent storm snow came with strong Northerly winds. This storm snow overloaded the Jan 18 persistent weakness (SH in sheltered areas, crust on exposed solar slopes) in deeper snowpack areas, and the weak and facetted base of the snowpack in shallow areas (deep persistent weakness), resulting in a natural cycle of large avalanche activity.
Avalanche Summary
Avalanche control work Monday, between the Icefields and Saskatchewan crossing, produced several large (size 2-2.5) persistent and deep persistent slab avalanches.A natural cycle of large slab avalanches occurred during the most recent storm.Help forecast - share observations HERE, on the Mountain Information Network!
Confidence
Avalanche Problems
Persistent Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood: Possible
Expected Size: 1 - 2.5
Deep Persistent Slabs
Aspects: All aspects.
Elevations: All elevations.
Likelihood: Possible
Expected Size: 1.5 - 3.5
Loose Dry
Aspects: All aspects.
Elevations: All elevations.
Likelihood: Possible - Likely
Expected Size: 1 - 1.5