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Archived

Avalanche Forecast

Mar 13th, 2019–Mar 14th, 2019
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
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
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

Regions: Jasper.

Avalanches still can happen on specific terrain features at Moderate hazard. Choose your terrain wisely.

Weather Forecast

A westerly flow continues and a much weaker front will track through bringing light precip, gusting west winds and rising freezing levels for Thur and Fri. Columbia Icefields Region:Thursday: Mainly Cloudy with isolated flurries, Treeline High Temp: -8. Ridge winds southwest 15km/h gusting 50km/h

Snowpack Summary

Windslabs in the alpine and treeline on N-E aspects. Previous old surfaces were; loose facets in sheltered terrain; wind affected in exposed areas; and, sun crust to treeline on solar aspects. The mid/lower snowpack is relatively strong for the region in deeper snowpack areas, and weak and facetted in shallow snowpack areas.

Avalanche Summary

A group of skiers triggered a large windslab avalanche in the backcountry near Marmot Basin Tuesday.A widespread cycle of small-large loose dry avalanches occurred Monday night during the snow and wind storm - these started small, but scrubbed down in to the facets.Several large windslab avalanches on alpine NE aspects also ran during the storm.

Confidence

The weather pattern is stable

Avalanche Problems

Loose Dry

Natural triggering has abated but human triggering remains a possibility, particularly in steep sheltered terrain.
Be aware of party members below you that may be exposed to your sluffs.Minimize exposure to steep, planar slopes.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2.5

Wind Slabs

Fresh windslabs sit on a variety of old surfaces, these will take several days to settle and stabilize.
Avoid steep lee and cross-loaded slopes

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2.5