Avalog
Register
Get forecast notifications
Create an account to receive email notifications when forecasts are published.
Register
Login
Archived

Avalanche Forecast

Mar 10th, 2013–Mar 11th, 2013
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
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Glacier.

Weather Forecast

Today should be mostly overcast, with a chance of flurries and moderate to strong westerly winds. Monday expect cooler temps, possibly to -18 in the alpine, and broken skies. On Tuesday the next strong system moves into the region. Temps and freezing levels will rise, and moderate to heavy precipitation with moderate to strong SW winds are forecast

Snowpack Summary

A breakable surface crust exists on solar aspects. 10cm of snow overlies a rain crust to 1800m and settled snow and windslabs above. Last weeks storm slab and the Feb12 surface hoar layer are gaining strength. The Feb12 is over a meter deep and is of most concern on solar aspects where it overlies a crust or on slopes that have not yet avalanched.

Avalanche Summary

Numerous solar triggered avalanches to size 2 were observed yesterday. These loose avalanches occurred on all solar aspects, with moist debris at lower elevations. A few crossed the uptrack from confined paths up Connaught. None were observed to step down or trigger slabs. Skiers also reported moist snow sluffing and snowballing on steep slopes.

Confidence

Timing, track, or intensity of incoming weather system is uncertain

Avalanche Problems

Persistent Slabs

The surface hoar/crust layer from February is becoming less reactive; a function of it now being 1-1.5m deep and having avalanched in many areas. It is most likely to be triggered on solar aspects or by heavy triggers, resulting in large avalanches.
Be aware of the potential for large, deep avalanches due to the presence of buried surface hoar.The stable avalanche conditions still require careful decision making.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 2 - 4