Archived

Avalanche Forecast

Dec 22nd, 2015–Dec 23rd, 2015

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

1: Low

The avalanche danger rating in the alpine will be low

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

1: Low

The avalanche danger rating in the alpine will be low

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

Regions: Little Yoho.

Weather Forecast

Mostly sunny with cool temperatures and light alpine winds through to Christmas Day.

Snowpack Summary

10-20cm of recent snow with Light to Moderate SW winds has formed isolated wind slabs in immediate lee areas in the alpine. The Dec 3 surface hoar is 40 to 70cm deep and generally found between 1700 and 2150m. This interface is gaining strength over time and recent snow-pack tests are producing variable shears in moderate to hard range.

Avalanche Summary

No new natural slab avalanches have been observed.

Confidence

Avalanche Problems

Wind Slabs

Isolated slabs soft slabs are present in immediate lee areas in the alpine.

Use caution in lee areas. Recent wind loading has created wind slabs.

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

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2

Persistent Slabs

The Dec 3 surface hoar is 40-70 cm down and producing variable shears in the moderate to hard range. Dig down to identify and test this layer before committing to steep, open or convex terrain below tree line.

Dig down to find and test weak layers before committing to a line.

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2