Avalanche Forecast

Issued: Nov 27th, 2014 7:35AM

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

Invading Arctic air will bring cold and clear weather heading into the weekend. Some areas could see strong outflow winds develop.

Summary

Weather Forecast

Friday: Mainly sunny but cold. The freezing level is at valley bottom with temperatures around -18 at treeline. Winds are moderate or strong from the E-NE. Saturday: Mainly sunny. Temperature increase with average treeline temps near -10. Winds are moderate from the north. Sunday: Increasing cloud with flurries developing. Treeline temperatures are around -7. Winds switch to light or moderate from the SW.

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 10 cm of light snow fell on Wednesday night. Winds are strong in the valley bottom - if this holds true at higher elevations then expect fresh wind slabs in exposed lee terrain. A weak layer interface (crust and faceted snow) is buried around 30 cm deep near Hudson's Bay Mountain. This layer could be found in other areas as well and might be deeper depending on aspect and elevation. 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 wind slabs in lee and cross-loaded terrain. 
Avoid travelling in areas that have been reverse loaded by winds.>Be cautious as you transition into wind affected terrain.>

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

Elevations: Alpine, Treeline.

Likelihood

Possible

Expected Size

1 - 3

Valid until: Nov 28th, 2014 2:00PM

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