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Avalanche Forecast

Feb 17th, 2017–Feb 18th, 2017
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: North Columbia.

The best riding right now is probably on high north aspects, which is also where the hazard is the highest. Don't let your guard down when searching for fresh powder.

Confidence

Moderate - Forecast snowfall amounts are uncertain

Weather Forecast

SATURDAY: Cloudy with light flurries, light winds and freezing levels around 1300 m.SUNDAY: Cloudy with flurries bringing another 2-5 cm, light southerly winds and freezing levels around 1200 m.MONDAY: Cloudy with light flurries, light winds and freezing levels around 1100 m.

Avalanche Summary

Reports from Thursday and Friday morning include natural and skier triggered 15-60 cm thick storm and wind slab avalanches up to Size 2. One skier-triggered storm slab stepped down to facets buried early February down 70 cm. Other reports include continued natural wet loose avalanche activity up to Size 2.5 at lower elevations. Touchy new storm slabs are sensitive to light triggers and have the potential to step down and trigger persistent slab avalanches.

Snowpack Summary

Expect to find 25-40 cm of fresh snow bonding poorly to buried surface hoar and/or a crust, and blown into deep wind slabs at higher elevations. At lower elevations the snow surface is wet and cohesionless and should soon freeze into a solid crust. Rapidly settling storm snow from last week is still bonding poorly to the previous snow surface from early February, which is now down 60-80 cm and includes a sun crust on steep sun-exposed slopes, faceted snow, as well as surface hoar on sheltered open slopes. The mid and lower snowpack are generally well settled and stable in deeper snowpack areas but may be faceted and weaker in shallower areas. The mid-December surface hoar/facet persistent weakness can now be found down roughly 150 cm. It has become inactive in the south of the region, but may still be lingering in the northern part of the region near Blue River and Valemount.

Avalanche Problems

Storm Slabs

Fresh storm slabs are sensitive to light triggers and particularly deep and touchy on wind-loaded slopes.
Avoid freshly wind loaded features.If triggered the storm slabs may step down to deeper layers resulting in large avalanches.Be alert to conditions that change with elevation.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Persistent Slabs

A persistent weakness down 50-80 cm remains remains sensitive to light triggers in isolated areas. Smaller avalanches have the potential to step down to this layer.
Use conservative route selection, choose moderate angled and supported terrain with low consequence.Be aware of the potential for large avalanches due to the presence of buried weak layers.Whumpfing, shooting cracks and recent avalanches are all strong indicators of unstable snowpack.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 2 - 3