Avalanche Forecast

Issued: Apr 8th, 2022 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 dsaly, Avalanche Canada

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As temperatures drop a thick surface crust will make for easy travel and decreased avalanche hazard.

Summary

Confidence

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

Weather Forecast

Friday night: Unsettled with isolated flurries, trace to 10 cm. West wind decreasing to moderate. Freezing level falling below 1500 m, ridgetop low -8 C.

Saturday: Mostly cloudy with light flurries, trace to 5 cm. Light to moderate west winds. Daytime freezing level reaching 1500 m, ridgetop high -1 C.

Sunday: A mix of sun and cloud with flurries bringing up to 5 cm of new snow. Cool overnight temperatures with daytime freezing levels reaching 1400 m and ridgetop high -2 C.

Monday: Sunny breaks and isolated flurries. Light west winds. Ridgetop high -2 C.

Avalanche Summary

Over the past few days storm and wind slab avalanches up to size 1.5 were triggered on all aspects at treeline. Triggers included ski cuts, vehicle and skier remotes and explosives. Several small natural cornice falls were also observed.

On Wednesday several size 1.5 wet loose avalanches were observed on solar aspects. We suspect wet slab and wet loose avalanches will be observed throughout the region on all aspects on Thursday and Friday.

Snowpack Summary

Recent warm temperatures have produced a crust on all aspects and elevations. Springtime flurries are unlikely to bond well with the crust and will be easily redistributed by wind. 

The general weather pattern is cooling with freezing levels nearing valley bottom, however wet slab and wet loose avalanches remain a hazard where snow remains moist or isothermal

Multiple crusts exist in the upper snowpack. The mid and lower snowpack are well settled.

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.
  • When a thick, melt-freeze surface crust is present, avalanche activity is unlikely.

Problems

Wind Slabs

An icon showing Wind Slabs

A dusting of flurries could form thin slabs in immediate lee features at upper elevations.

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 1.5

Valid until: Apr 9th, 2022 4:00PM