Avalanche Forecast

Issued: Jan 4th, 2021 3:00PM

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

Avalanche Canada Mikey, Avalanche Canada

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Approach the Alpine with caution as wind slabs are widespread. Some large recent avalanches are a sign that the snowpack needs more time to heal.

Summary

Confidence

High -

Weather Forecast

Tuesday: Temperatures are expected to cool off during the day down to -10c with strong SW winds. Expect 1-5cm of snow.

Wednesday: Maybe another 5cm of snow but continued strong winds.

Avalanche Summary

Murray Creek: One size 2, west aspect around 2300m that looked like it occurred sometime on Sunday and One size 3, north aspect that appeared to have occurred this last Saturday or Sunday. These avalanches are a good reminder that the snowpack needs to settle a little longer before exposing oneself to bigger terrain.

Snowpack Summary

This last weekend brought us up to 25cm of snow along with strong winds. The result is widespread wind slabs in the Alpine and isolated areas of tree line. There are now several generations of wind slabs in the upper snowpack. As you transition from tree line to the alpine, take the time to dig and evaluate what is going on with the snowpack. We have a generally strong mid pack that sits overtop of the November 5 crust. Our greatest concern with the Nov. crust is in shallow areas where the facets around the crust are more pronounced. Cornices are growing fast so it is a good time to give them lots of space.

Terrain and Travel

  • Avoid areas where the snow feels stiff and/or slabby.
  • Be especially cautious as you transition into wind affected terrain.
  • Be alert to conditions that change with elevation and wind exposure.
  • Avoid thin areas like rock outcroppings where you're most likely to trigger avalanches failing on deep weak layers.

Problems

Wind Slabs

An icon showing Wind Slabs

The winds will continue into Tuesday and Wednesday.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

1.5 - 2.5

Deep Persistent Slabs

An icon showing Deep Persistent Slabs

This "sleeping giant" is still out there. Shallow snowpack areas could be trigger points. 

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

2 - 3.5

Cornices

An icon showing Cornices

The strong SW flow will continue to build these cornices well into Wednesday.

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

Elevations: Alpine.

Likelihood

Possible - Likely

Expected Size

1.5 - 2.5

Valid until: Jan 5th, 2021 3:00PM

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