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Archived

Avalanche Forecast

Feb 27th, 2023–Feb 28th, 2023
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
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
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.

The storm slab now buries a layer of facets and may remain reactive for a few days. Assess the snowpack before stepping into bigger terrain.

Excellent snow quality is found in sheltered areas.

Confidence

High

Avalanche Summary

A natural avalanche cycle occurred early Sunday morning up to size 3 and artillery avalanche control on Sunday produced results averaging size 2 and up to size 3.5.

Snowpack Summary

30cm of recent storm snow buries a thin layer of facets. Excellent snow quality is found in sheltered locations.

The consistent snowfall in Feb has helped strengthen and promote rounding of the mid and lower snowpack.

The deep persistent weakness at the base of the snowpack consists of rounding facets and a decomposing crust in some locations.

Weather Summary

A mix of sun and cloud for Tuesday with isolated flurries, an alpine high of -8 and light Southerly winds.

Another pulse of snow (~10cm) and increasing winds on Wednesday evening into Thursday morning.

Terrain and Travel Advice

  • Storm slabs in motion may step down to deeper layers resulting in large avalanches.
  • Loose avalanches may start small but they can grow and push you into dangerous terrain.
  • Use appropriate sluff management techniques.

Avalanche Problems

Storm Slabs

30cm of recent snow and moderate Southerly winds have formed storm slabs. Pay attention to changing conditions when entering tree line and alpine terrain, as slabs will likely be deeper in wind deposited areas.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2.5