Avalanche Forecast

Issued: Dec 30th, 2012 9:01AM

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

Avalanche Canada triley, Avalanche Canada

Summary

Confidence

Fair - Timing or intensity of solar radiation is uncertain on Tuesday

Weather Forecast

Overnight and Monday: An upper ridge of HIGH pressure will cause temperatures in the alpine to dip to about -16.0 overnight. An inversion is expected to develop in the alpine during the day which may cause temperatures to be near zero at ridge tops with cloud in the valleys. Clear skies may cause some solar warming on steep Southwest thru West aspects. Light Northerly winds and no precipitation.Tuesday: Continued mostly clear skies and valley cloud. Light Northerly winds and no precipitation.Wednesday: Cloud and very light precipitation as a weak front brushes the North of the region.

Avalanche Summary

Loose snow avalanches up to size 1.5 continue to be reported from steep terrain.

Snowpack Summary

Surface hoar continues to grow on all aspects and at all elevations, report from Allen Creek observed up to 20 mm. The 10-20cm of new low density snow has been lightly redistributed by the wind creating wind slabs in isolated locations and burying a small layer of surface hoar or facets. These are sitting on a generally well-settled mid-pack. Deep persistent instabilities (surface hoar and an early November crust, respectively) located in the middle and near the bottom of the snowpack may still be a concern but there's little recent evidence of them being reactive.

Problems

Loose Dry

An icon showing Loose Dry
Expect unconsolidated surface snow to sluff in steep terrain.
Be cautious of sluffing in steep terrain.>

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Likely

Expected Size

1 - 2

Wind Slabs

An icon showing Wind Slabs
Recent winds have created wind slabs in the lee of terrain features.
Use ridges or ribs to avoid pockets of wind loaded snow.>

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

Elevations: Alpine, Treeline.

Likelihood

Unlikely - Possible

Expected Size

1 - 3

Valid until: Dec 31st, 2012 2:00PM

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