Avalanche Forecast

Issued: Feb 13th, 2022 4:00PM

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

Avalanche Canada rbuhler, Avalanche Canada

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Thin new wind slabs may form on Monday. These will sit on a firm melt-freeze crust which may increase their reactivity. 

Summary

Confidence

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

Weather Forecast

The warm air exits the region Sunday overnight. A weak storm system is expected to bring light snowfall for Monday morning before clearing in the afternoon. 

Sunday night: Mainly cloudy, moderate SW wind, freezing levels falling to around 1000 m.

Monday: Snowfall in the morning up to 15 cm, sunny breaks in the afternoon, moderate SW wind becoming light NW, freezing levels reaching around 1200 m. 

Tuesday: A mix of sun and cloud, moderate NW wind, freezing levels around 1000 m. 

Wednesday: Mainly cloudy, moderate NW wind, freezing levels as high as 2000 m with an inversion.

Avalanche Summary

On Saturday, a natural rockfall-triggered loose wet avalanche was reported from a south-facing cliff band. Glide cracks were also reported to be opening up. No new avalanches were reported on Friday. 

Snowpack Summary

Monday's snowfall will bury a widespread surface crust which exists on all aspects and at all elevations.

The late-January melt-freeze crust is now down around 40 cm and is reported to be knife hard and up to 30 cm thick. This crust extends to at least the top of treeline and is generally well bonded to the adjacent snow. 

The middle and lower snowpack are considered well settled and strong.

Terrain and Travel

  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
  • Wind slabs may be poorly bonded to the underlying crust.

Problems

Wind Slabs

An icon showing Wind Slabs

Thin new wind slabs may form on Monday. These could be more reactive than normal given the hard crust they will be sitting on. 

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 1.5

Valid until: Feb 14th, 2022 4:00PM

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