Archived

Avalanche Forecast

Dec 15th, 2021–Dec 16th, 2021

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.

There is uncertainty regarding wind slabs in the alpine due to minimal observations. Benign weather and a dive in temperatures Thursday/Friday will likely continue to improve conditions.

Weather Forecast

Light winds, cold temperatures (below -20C), and no new snow expected on Thursday. Friday will have slightly warmer temperatures (-12C) and continued light winds.

Snowpack Summary

20-30 cm of low density surface snow with limited windslab development in the alpine. There is a Dec. 2 rain crust below 2200m down 60-80cm which has facets above and below which will be one to watch in the future. The average HS at treeline is 220cm.

Avalanche Summary

No avalanches observed or reported.

Confidence

Avalanche Problems

Wind Slabs

We still have limited information about distribution of these in the high alpine. Most reports in Little Yoho have talked of minimal wind effect, with some isolated explosive results East of the divide at the ski hills.

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

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1 - 2