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Archived

Avalanche Forecast

Jan 14th, 2019–Jan 17th, 2019
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
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
1: Low
The avalanche danger rating below treeline will be low

Regions: Waterton Lakes.

Recent settlement has generally increased the strength of our snowpack but pockets of Wind Slab exist at higher elevations. Lingering uncertainty about the ability to trigger deep persistent weak layer requires a cautious approach to terrain. 

Weather Forecast

TUESDAY          Cloudy with sunny periods.  No precipitation. Light SE wind.WEDNESDAY    Cloudy with isolated flurries. Trace amounts of snow. SW Wind 25- 35 km/h.THURSDAY        Cloudy with scattered flurries.  4 cm snow. Freezing Level valley bottom. Moderate E wind.

Snowpack Summary

Surface Hoar development 1600-1800m. Sun crust on solar aspects. 10-30cm Wind slabs in lee terrain over a strong, well-settled midpack. Facets and Depth Hoar at the base of the snowpack remain a concern in shallow snowpack areas.

Avalanche Summary

No new avalanches observed last 72 h.

Confidence

Due to the number of field observations

Avalanche Problems

Wind Slabs

Approach steep lee and cross-loaded slopes with caution.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2

Deep Persistent Slabs

Avoid steep convexities or areas with a thin or variable snowpack.Pay attention to overhead hazards like cornices which could trigger the deep persistent slab.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3