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Avalanche Forecast

Mar 18th, 2016–Mar 19th, 2016
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Jasper.

Caution still advised in Portal/Whistler Creek as persistent slab still a concern. Intense solar radiation and rising freezing levels on Saturday may act as a trigger.

Weather Forecast

Cold clear nights on Friday and Saturday.  Sunny conditions on Saturday with light winds and freezing level to 2000 m.  Cloud moving in on Sunday with light snow beginning by late afternoon.  Freezing levels rising to 2300 m on Sunday and winds remaining light. Flurries continuing into early next week.

Snowpack Summary

The snowpack is generally shallow and poorly consolidated, significant variation exists within the forecasting area. The persistent slab may still be active in the Portal Creek area. This layer could be trigger from thin spots on the slope (trees, rocks, etc). Alpine wind slab is present on lee slopes. Springlike conditions below tree-line.

Avalanche Summary

No new avalanches reported.

Confidence

Timing or intensity of solar radiation is uncertain on Saturday

Avalanche Problems

Persistent Slabs

This problem may still be a concern in the Whistler/Portal Creek area. It appears to be inactive in the Maligne and Icefields areas.
Avoid slopes when the solar radiation is strong, especially if they have large cornices overhead.Be aware of thin areas that may propogate to deeper instabilites.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 2 - 3

Wind Slabs

Uniform wind slab has formed on most lee alpine and tree line slopes and cross-loaded features.
Caution in lee and cross-loaded terrain near ridge crests.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