Archived

Avalanche Forecast

Nov 28th, 2015–Nov 29th, 2015

Alpine

Below Threshold

The avalanche danger rating in the alpine will be below threshold

Treeline

Below Threshold

The avalanche danger rating at treeline will be below threshold

Below Treeline

Below Threshold

The avalanche danger rating below treeline will be below threshold

Alpine

Below Threshold

The avalanche danger rating in the alpine will be below threshold

Treeline

Below Threshold

The avalanche danger rating at treeline will be below threshold

Below Treeline

Below Threshold

The avalanche danger rating below treeline will be below threshold

Alpine

Below Threshold

The avalanche danger rating in the alpine will be below threshold

Treeline

Below Threshold

The avalanche danger rating at treeline will be below threshold

Below Treeline

Below Threshold

The avalanche danger rating below treeline will be below threshold

Regions: Northwest Inland.

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Confidence

Poor - Due to the number of field observations

Weather Forecast

High pressure, dry conditions and warm alpine temperatures are expected to continue until Monday. Valley cloud is likely on Sunday. Light snow is expected to begin late Monday (around 5 cm overnight), with strong southerly winds. Light snow continues on Tuesday. Confidence in the intensity and timing of this system is low.For more details check out avalanche.ca/weather

Avalanche Summary

Naturally triggered loose wet avalanches were observed in sunny rock outcrops this week. Glide slabs have also been active on a variety of aspects.

Snowpack Summary

So far, we only have limited information from the field. Initial reports suggest that there is little snow below treeline. Recent outflow winds have created variable wind slabs and crusts at higher elevations. In some places, wind slabs may overlie a crust, surface hoar or facets. A persistent weak layer exists at the base of the snowpack in the north of the region, however I am not sure how widespread this is.Unusually warm temperatures are weakening surface snow layers.

Avalanche Problems

Wind Slabs

Wind slabs may be lurking near, or well below, ridge crests. Conditions are highly variable, so be alert to hollow, drummy sounds and changes in the feel of the snow as you travel.

Be cautious as you transition into wind affected terrain.>Watch for whumpfing, hollow sounds, shooting cracks or recent avalanches.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3

Loose Wet

Unusually warm alpine temperatures may weaken surface snow and lead to loose wet avalanches.

Watch for signs of snowpack warming, like snowballing, sluff from cliffs or recent avalanches.>

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 1 - 3