Avalanche Forecast

Issued: Jan 28th, 2021 4:00PM

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

Avalanche Canada kdevine, Avalanche Canada

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Triggering avalanches remains possible in wind loaded areas and in steep terrain where sluffing may occur.

Small avalanches can have big consequences if they are triggered above features like cliffs or terrain traps.

Summary

Confidence

Moderate - Confidence is due to a stable weather pattern with little change expected.

Weather Forecast

THURSDAY NIGHT - Mainly cloudy / light southwest wind / alpine low temperature near -9 

FRIDAY - Mainly cloudy with isolated flurries, 5-10 cm possible in the overnight period / light to moderate southwest wind / alpine high temperature near -8 

SATURDAY - Flurries, 5 cm, with another 5-10 cm overnight / moderate to strong south wind / alpine high temperature near -6 

SUNDAY - Flurries, 5-10 cm, with another 5-10 cm overnight / strong south wind / alpine high temperature near -5 

Avalanche Summary

It may be possible to trigger small pockets of wind slab at higher elevations. Steep terrain features with no slab may sluff when ridden.

On Tuesday there were a few reports of explosives triggered size 1.5-2 avalanches.

There were a few reports of natural and human triggered dry loose avalanches on Monday.

Snowpack Summary

5-15 cm of recent fresh snow sits on firm wind affected snow at upper elevations, on surface hoar in some sheltered areas, on a melt-freeze crust below 1600 m, and on a sun crust on south-facing slopes. Recent southeast winds may have redistributed some of this new snow, creating wind slabs in leeward terrain.

In the south, the underlying snowpack is well consolidated. In the north, a melt-freeze crust from early December may be found 100 to 200 cm deep. Recent reports suggest that this layer is gaining strength and has been unreactive in recent weeks.

Terrain and Travel

  • Watch for wind-loaded pockets especially around ridgecrest and in extreme terrain.
  • Use caution above cliffs and terrain traps where even small avalanches may have severe consequences.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.
  • Be aware of the potential for loose avalanches in steep terrain where snow hasn't formed a slab.

Problems

Wind Slabs

An icon showing Wind Slabs

It may be possible to trigger pockets of windslab at upper elevations from recent east to south wind. 

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

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Jan 29th, 2021 4:00PM

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