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Avalanche Forecast

Apr 25th, 2014–Apr 26th, 2014
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
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
1: Low
The avalanche danger rating in the alpine will be low
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

Regions: Jasper.

Touchy windslabs will form on the suncrust on South and West aspects.  Good powder skiing can be found on North aspects at treeline and above.

Weather Forecast

An up-slope storm is still being forecasted with the majority of snow to fall Friday night with E winds. Crust recovery is expected at all elevations.  There will be a mix of rain and snow showers through Saturday. Cloudy conditions on Sunday with moderate winds shifting to the SW. Temps will jump up to the 20's by mid-week.

Snowpack Summary

A rain crust from the valley bottom to 2,350m and a sun crust into Alpine on solar aspects. Wind slabs on NE aspects from 2,000 m to the alpine. Moist and wet snow exists below the crust extending into the alpine on solar aspects. The mid-pack is solid on North aspects. Large cornices.

Avalanche Summary

No new activity observed in the Icefields today. On April 23rd, avalanche control produced size 1-2 soft slabs at 2200m sliding on a rain crust and cornice failures produced size 3's on steep un-skiable terrain (Cromwell and Boundary peak).

Confidence

Intensity of incoming weather systems is uncertain on Saturday

Avalanche Problems

Storm Slabs

The incoming storm looks to be up-slope so slabs will be forming the suncrust on South and West aspects on Saturday.
Avoid convexities or areas with a thin or variable snowpack.Avoid travelling in areas that have been reverse loaded by winds.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Deep Persistent Slabs

Large triggers such as cornice failures have the potential to initiate deep avalanches. These could be could be a wet or dry slab characteristic depending on aspect.
Be aware of thin areas that may propogate to deeper instabilites.Pay attention to overhead hazards like cornices.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3

Loose Wet

This condition is dependant upon prolonged exposure to direct sun. Monitor this and its effect on the crust. Move off slopes if crust begins to break down.
Start and finish early before the surface crusts melt.

Aspects: North, North East.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 2