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Archived

Avalanche Forecast

Apr 17th, 2015–Apr 18th, 2015
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
1: Low
The avalanche danger rating at treeline will be low
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
1: Low
The avalanche danger rating at treeline will be low
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.

Cornices are large throughout the forecast area. Avoid slopes that could expose you to cornice failure.

Weather Forecast

Light snow flurries overnight in the icefields area with some rain in the valley bottoms near the townsite. Temps will be cooler on Saturday with a mix of sun and clouds. The freezing level with rise only to 1500m during the day with only light NW winds. Warmer temperatures and sunny spring weather is expected to start Monday afternoon.

Snowpack Summary

Strong Southwesterly winds have created pockets of windslab and scoured any exposed areas at upper elevations. Weak basal facets are bridged by a strong mid-pack in most areas at treeline and above.

Avalanche Summary

Natural cornice failures continue and many more are waiting their turn to fall.

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Monday

Avalanche Problems

Wind Slabs

Wind slabs have formed on lee slopes and cross loaded features at alpine and exposed tree line elevations.
Avoid cross loaded slopes at or above treeline.Use caution in lee areas. Recent wind loading have created wind slabs.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Cornices

Natural cornice failures are being observed daily. Pay attention to what is above you and avoid cornice exposed slopes.
Extra caution needed around cornices with current conditions.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2