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Archived

Avalanche Forecast

Nov 27th, 2015–Nov 28th, 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.

Unusually warm alpine temperatures may drive danger up.Thanks to everyone who has been submitting to the Mountain Information Network. Join the movement!

Confidence

Fair - Due to the number of field observations

Weather Forecast

It is expected to remain clear and dry through to Monday, with valley cloud developing on Sunday. A layer of warm air aloft is driving temperatures above zero at alpine elevations. For more details check out avalanche.ca/weather

Avalanche Summary

Naturally triggered loose wet avalanches were observed in sunny rock outcrops. Glide slabs are also 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.
Watch for whumpfing, hollow sounds, shooting cracks or recent avalanches.>Be alert to conditions that change with elevation and use a cautious approach to terrain while gathering information along the way.>

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

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 4

Loose Wet

Unusually warm alpine temperatures may weaken surface snow and lead to loose wet avalanches.
Watch for clues that indicate that the snowpack is warming up, like sluffing off of cliffs, snow balling and natural avalanche activity.>

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3