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Avalanche Forecast

Apr 11th, 2022–Apr 12th, 2022
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
1: Low
The avalanche danger rating in the alpine will be low
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
1: Low
The avalanche danger rating in the alpine will be low
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 Columbia.

Strong northeasterly winds have reverse loaded slopes below alpine ridgetops. Recently formed wind slabs may be reactive to human triggers.

Use high points in the terrain such as ridges or ribs to avoid areas of wind-loaded snow. 

Confidence

High -

Weather Forecast

Monday night: Partly cloudy / Light southeast wind / Low of -17 / Freezing level valley bottom.

Tuesday: Mix of sun and cloud / Light southeast wind / High of -6 / Freezing level 500 m.

Wednesday: Mix of sun and cloud / Light southeast wind / High of -5 / Freezing level 700 m.

Thursday: Mix of sun and cloud / Light east wind / High of -4 / Freezing level 1000 m.

Avalanche Summary

No new avalanches were reported on Sunday.

Snowpack Summary

10-20 cm of recent snow buries a melt-freeze crust that exists on all aspects to at least 2200 m and up to mountain tops on solar aspects.

Recent strong winds from a variety of directions formed wind slabs on lee aspects in the alpine.

The prominent layer in the upper snowpack is a melt-freeze crust down 60-90 cm.

Cornices are very large and exposure to slopes beneath them should be minimized, especially if the weather is sunny, warm, or windy.

Terrain and Travel

  • Be careful with wind loaded pockets, especially near ridge crests and roll-overs.
  • Recent wind has varied in direction so watch for wind slabs on all aspects.
  • Avoid steep, rocky, and wind effected areas where triggering slabs is more likely.
  • Caution around slopes that are exposed to cornices overhead.

Avalanche Problems

Wind Slabs

 Recent wind has varied in direction so watch for wind slabs on all aspects. 

Use high points in the terrain such as ridges or ribs to avoid areas of wind-loaded snow. 

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2