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Archived

Avalanche Forecast

Apr 8th, 2016–Apr 9th, 2016
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold
Alpine
Below Threshold
The avalanche danger rating in the alpine will be below threshold
Treeline
Below Threshold
The avalanche danger rating at treeline will be below threshold
Below Treeline
Below Threshold
The avalanche danger rating below treeline will be below threshold

Regions: Jasper.

Plan to travel early and be off big slopes by early afternoon. 

Weather Forecast

A typical diurnal pattern is expected through the weekend with late afternoon freezing level limited to 2250m. A cooler day expected on Saturday with light winds and a mix of sun and clouds. Similar conditions on Sunday. Should be a beautiful weekend!

Snowpack Summary

A strong melt freeze crust will form Friday night after a very warm day. This crust will bridge a weak and isothermal snowpack on most tree-line and alpine slopes. This crust will break down with increasing temperatures and solar input. A persistent slab, 30 to 70cms thick, will be of greatest concern on Northerly aspects.

Avalanche Summary

No new avalanches observed at time of bulletin (15:30 hrs) but expecting continued solar and temperature triggered avalanches on all aspects and elevations.

Confidence

Avalanche Problems

Deep Persistent Slabs

Cool temperatures over the weekend will reduce this problem but caution advised on slopes if hot sunny conditions are experienced.
Avoid shallow snowpack areas where triggering is more likely.Travel early on frozen crusts before the heat of the day.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 4

Loose Wet

Will still be an issue on south facing slopes.
Be very cautious with gully features.Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2

Cornices

Cornice failures is possible.  Avoid slopes with cornices overhead.
Cornices become weak with daytime heating.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 2