Archived

Avalanche Forecast

Nov 21st, 2015–Nov 22nd, 2015

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

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

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: Little Yoho.

Watch for wind slabs in exposed terrain on high alpine slopes, especially where they may overly facets.

Two storms have formed most of the current snowpack, and it is a very supportive snowpack considering it is only November. Great ski conditions!

Weather Forecast

High winds tonight and then moderately cool temperatures on Sunday and Monday. Light flurries are expected tomorrow with 10 cm forecast for Monday night.

Snowpack Summary

Today's Yoho field trip found a good stable early season snowpack. Some surface hoar and facetting was noted near the ground. The alpine has extensive windslabs, with thin areas and loaded lee pockets.

Avalanche Summary

Only minor results from explosive testing during the last three days.

Confidence

Avalanche Problems

Wind Slabs

In thicker snowpack areas wind slabs have formed over previous storm snow and are less sensitive to triggering. In thinner snowpack areas these may be lying over weaker basal facets formed in late fall, and be more sensitive to skier triggering.

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

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3