Archived

Avalanche Forecast

Dec 23rd, 2011–Dec 24th, 2011

Alpine

3: Considerable

The avalanche danger rating in the alpine will be considerable

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

Alpine

3: Considerable

The avalanche danger rating in the alpine will be considerable

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

1: Low

The avalanche danger rating below treeline will be low

Regions: Jasper.

Warming temperatures with the possibility of rain showers forecast for this weekend could increase the avalanche danger below treeline. Pay close attention to abrupt changes in temperature and precipitation type if traveling in avalanche terrain.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Saturday

Avalanche Problems

Wind Slabs

The alpine is mostly blown bare with hard windslabs and loaded lee slopes that can be easily identified and avoided. Wind slabs are present on easterly treeline aspects. These can be a little more tricky to identify so avoid slabby feeling slopes.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3

Deep Persistent Slabs

Basal facet collapses are still occurring below the midpack bridging layer. Shallow snowpack areas and rocky outcrops are likely trigger locations. A large full path avalanche could result if this weakness is triggered.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3