Avalanche Forecast

Issued: Jan 19th, 2022 3:00PM

The alpine rating is considerable, the treeline rating is moderate, and the below treeline rating is low. Known problems include Wind Slabs.

Avalanche Canada mkoppang, Avalanche Canada

A return of stronger winds on Thursday will increase the avalanche danger in the Alpine due to windslabs development. 

Summary

Confidence

Moderate - Uncertainty is due to the track & intensity of the incoming weather system.

Weather Forecast

Light snowfall is forecast for the region on Thursday and temperatures are expected to warm up slightly to around -5C for a daytime high. Winds will increase to more moderate out of the SW and move the new and recent snow around somewhat. 

Avalanche Summary

Numerous loose dry avalanches over the past few days up to sz 1 and a few smaller windslabs up to sz 2 on N and E aspects in the alpine. 

Snowpack Summary

Light winds over the past few days has allowed the recent snow to remain in most areas giving a nice beautiful look! What's important though is what is this new snow sitting on! Windslabs are widespread in the alpine and now buried under the recent snow making thin areas harder to distinguish. So, be carfeul not to dry-dock on the rocks while exploring terrain. At treeline, windslabs are more variable and not as obvious. The Dec 2nd persistent layer is down over 1m in the snowpack and not produced much activity of recent. While no longer a problem we are still following this layer and encourage others to do the same. As winds increase on Thursday for the day, watch for windslabs to develop. 

Terrain and Travel

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Be aware of the potential for large avalanches due to the presence of a persistent slab.
  • Watch for areas of hard wind slab on alpine features.

Problems

Wind Slabs

An icon showing Wind Slabs

Recent snow and that forecast for tomorrow will quickly build windslabs in the Alp and treeline with the forecasted winds. 

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

1 - 2.5

Valid until: Jan 20th, 2022 3:00PM

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