Avalanche Forecast

Issued: Feb 24th, 2017 3:45PM

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

Avalanche Canada shorton, Avalanche Canada

Remember to use good travel habits this weekend and watch for isolated areas with unstable snow.

Summary

Confidence

High -

Weather Forecast

SATURDAY: Flurries starting in the afternoon with 2-4 cm of new snow, light west winds, alpine temperatures around -10 C.SUNDAY: Scattered flurries with 2-4 cm of new snow, light winds, alpine temperatures around -10 C.MONDAY: Another 2-4 cm in the morning then clearing, light winds, alpine temperatures around -12 C.

Avalanche Summary

On Thursday, several small size 1 wind slabs were skier triggered on isolated wind loaded features and above the mid-February crust. Widespread sluffing was reported in the new snow. A size 2.5 cornice failure on a east aspect in the Selkirks did not trigger a slab on the slope below. Small avalanches in the new snow remain the primary concern over the weekend.

Snowpack Summary

Light flurries over the past few days have delivered 15-30 cm of low density snow. Expect to find isolated pockets with thicker wind deposits at higher elevations as well as sun crusts forming on steep south-facing slopes. The the mid-February interface is now buried 20-40 cm deep, and is composed of a thick rain crust up to about 1800 m, sun crusts on steep solar aspects, and spotty surface hoar on shaded aspects. Although recent reports suggest the snow is gradually bonding to this interface, it has produced some sudden snowpack test results and reactive ski cuts. The mid and lower snowpack are generally well settled and stable in deeper snowpack areas, but may be weak and faceted in shallow areas.

Problems

Wind Slabs

An icon showing Wind Slabs
Watch for wind loaded slopes in exposed alpine terrain.
Be cautious as you transition into wind affected terrain.Use caution above cliffs where small avalanches may have severe consequences.The recent snow may now be hiding windslabs that were easily visible before the snow fell.

Aspects: All aspects.

Elevations: Alpine.

Likelihood

Possible

Expected Size

1 - 2

Valid until: Feb 25th, 2017 2:00PM

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