Archived

Avalanche Forecast

Feb 27th, 2017–Feb 28th, 2017

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

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

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

Regions: Glacier.

Watch for unstable snow on isolated terrain features; identify features of concern. Skier reactive wind slabs on both south and north aspects are likely to be found on the immediate lee of ridges. Cornice failure is a major concern today in the sun.

Weather Forecast

Today, sunny with cloudy periods, nil for precipitation. Alpine temperature high of -15C. Ridge wind will be light out of the west. Freezing level at valley bottom. Stay aware of possible periods of intense solar affecting the slopes you are on and terrain above you - cornices will weaken in direct sun.

Snowpack Summary

In the alpine and treeline elevations, expect to find wind affected snow in wind exposed areas and immediately below ridge crests - these areas are more likely to be avalanche trigger zones. Good quality skiing can be found in locations that are less disturbed by the wind. Below 1500m crusty conditions exist. Direct sun will bring the hazard up.

Avalanche Summary

Skier triggered and natural sluffing has been observed on steeper slopes over 35deg. These avalanches were generally small but could push you into terrain traps and trees. On Friday, there were three size 1.5 storm slabs on Glacier Crest and a size 2.0 NC in the Crossover slidepath. Macdonald Gully 6 had a size 3.0 NC, running to almost full extent

Confidence

Avalanche Problems

Wind Slabs

Mod winds out of the south and recently out of the north have likely formed wind slabs below ridge crests on all aspects.

Use caution in lee areas. Recent wind loading have created wind slabs.Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Loose Dry

Sluffing in top 10-20cm, specific to steep terrain 35-40deg+

Use caution above cliffs where small avalanches may have severe consequences.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 2