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Archived

Avalanche Forecast

Apr 5th, 2015–Apr 6th, 2015
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
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: Little Yoho.

Spring conditions are here. Cornices are  immense, fragile and susceptible to heat in the start zones. Early starts and early finishes minimize your exposure to deteriorating snowpack conditions and other hazards. PJ

Weather Forecast

Some convective flurries can expected through tonight and tomorrow and then an upper ridge will strengthen through early next week with sunny, warm and dry weather on Tuesday and Wednesday. Freezing levels will increase as the week continues up to 2000 meters and winds will remain light from the SE tomorrow.

Snowpack Summary

Storm snow amounts varied from 26cms in Lake Louise & 8-10 cms at Bow Summit and the Wapta. This low density snow did not exhibit much in the way of slab properties today. The interface with the old snow surfaces appears to be bonding well on solar aspects but on north the interface is reactive to ski cuts on terrain steeper than 30 degrees.

Avalanche Summary

Loose snow natural avalanches up to size 1.5 were observed in the alpine in isolated locations as well as some natural storm slab failures up to size 1-1.5 at treeline.

Confidence

Timing or intensity of solar radiation is uncertain on Tuesday

Avalanche Problems

Loose Dry

New snow will sluff easily on any crust or hard wind pressed surface it is lying over. If winds are stronger than forecast this will augment this problem.

  • The snowpack on glaciers is shallow, and the use of a rope is recommended.
  • The new snow will requires several days to settle and stabilize.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2