Avalanche Forecast

Issued: Nov 28th, 2014 7:51AM

The alpine rating is below threshold, the treeline rating is below threshold, and the below treeline rating is below threshold. Known problems include Wind Slabs.

Avalanche Canada Peter, Avalanche Canada

Cold and dry conditions should persist this weekend under an Arctic ridge of high pressure.

Summary

Weather Forecast

A push of Arctic air from the north is bringing dry, cold and windy conditions to the northwest. Valley bottom temperatures will hover around -15 to -20. We should continue to see moderate or strong outflow winds (from the E-NE) in coastal valleys and inlets. On Sunday we could see increasing cloud and light snowfall as a system moves in from the northwest. This could also increase temperatures by a few degrees, but it will remain cool.

Avalanche Summary

There are no new observations from the region. Please let us know what you're seeing out there. Email us at forecaster@avalanche.ca.

Snowpack Summary

As we begin our forecasting season, we are working with limited information from the field. This forecast is primarily based off weather station data and a few field observations from the past week or two. Approximately 20-30 cm of cold dry snow has fallen in the past couple days, mainly in the southern part of the region. Moderate or strong easterly winds may have blown this snow into stiff wind slabs in exposed lee terrain. Be alert to signs of wind loading like patterns on the snow surface, variable new snow depths, and dense or hollow sounding snow. A potential weak layer interface (crust and faceted snow) may be buried 30-50 cm deep. Check the bond of the snowpack at this level and take a cautious approach.

Problems

Wind Slabs

An icon showing Wind Slabs
Fresh snow may be stripped from exposed windward slopes and blown into dense and touchy wind slabs in lee and cross-loaded terrain.
Be cautious as you transition into wind affected terrain.>Avoid travelling in areas that have been reverse loaded by winds.>

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 3

Valid until: Nov 29th, 2014 2:00PM