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Archived

Avalanche Forecast

Jan 28th, 2015–Jan 29th, 2015
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
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

Regions: Glacier.

If the solar is strong today it may result in some avalanche activity or cause cornices to fail which may trigger deeper instabilities. Expect challenging ski conditions.

Weather Forecast

Wednesday and Thursday expect low cloud and sun in the alpine. Temps have cooled off with a high of -5'C, light to moderate SW winds and no snow. On Friday, a frontal system will bring light flurries but only a trace of snow.

Snowpack Summary

Light dusting overnight on breakable crust over moist snow to ~2400m. Above 2400m snow is heavily wind affected. The Jan15 surface hoar layer is down 60-90cm is becoming more stubborn to trigger but is still likely to propagate. The Dec 17 surface hoar/ crust complex is down 130-180cm and is still reactive in snowpack tests. Cornices grew large.

Avalanche Summary

Natural avalanche activity has tapered off with cooling. Recent avalanche control triggered slab avalanches to size 3 failing on the Jan 15th layer.

Confidence

Avalanche Problems

Persistent Slabs

Recent avalanches have been failing on the Jan.15 surface hoar layer, now buried 60-100cm deep. Some avalanches have stepped down to a deeper layer from mid Dec.
Use conservative route selection, choose moderate angled and supported terrain with low consequence.Do not travel on slopes that are exposed to cornices overhead.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 2 - 4