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Archived

Avalanche Forecast

Dec 14th, 2021–Dec 15th, 2021
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
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: South Coast.

Forecast strong, southerly winds on Wednesday are expected to form wind slabs on lee features at treeline and above.

 Avoid freshly wind loaded features, especially near ridge crests, roll-overs and in steep terrain. 

Confidence

High -

Weather Forecast

TUESDAY NIGHT: Cloudy with isolated flurries; 0-3 cm / Moderate, southwesterly winds / Low of -2 C / Freezing level 500 m.

WEDNESDAY: Cloudy with flurries; 3-5 cm / Strong, southerly winds / High of 3 C / Freezing level 1000 m.

THURSDAY: Mix of sun and cloud / Moderate, northwesterly winds / High of 1 C / Freezing level 500 m.

FRIDAY: Mix of sun and cloud / Light, westerly winds / High of 1 C / Freezing level 500 m.

Avalanche Summary

Small (size 1) rider triggered wind slabs were reported in this region on Monday.

Snowpack Summary

Forecast strong, southerly winds on Wednesday are expected redistribute the 10-15 cm of recent snow into wind slabs on lee features at treeline and above.

30-40 cm of recent snow has buried the early December crust layers. The snowpack is generally well-settled and strong below these layers. 

Terrain and Travel

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Avoid freshly wind loaded features, especially near ridge crests, roll-overs and in steep terrain.
  • Use ridges or ribs to avoid areas of wind loaded snow.
  • Avoid terrain traps where the consequence of any avalanche could be serious.

Avalanche Problems

Wind Slabs

Fresh wind slabs will likely form on lee features at treeline and above on Wednesday.

Aspects: North, North East, East, West, North West.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2