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Archived

Avalanche Forecast

Feb 13th, 2015–Feb 14th, 2015
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Jasper.

http://www.pc.gc.ca/apps/links/goto_e.asp?destination=Any solar input on the already moist snowpack will increase the hazard over the day. Take your sunscreen and use extra caution on all classic avalanche terrain features. Be careful out there folks and enjoy the long weekend!

Weather Forecast

Forecasts are showing a clearing trend over the day Saturday. Overall it does show a slow cooling trend but the sun is packing a bigger punch these days and will likely wake up the snowpack!

Snowpack Summary

Continuing moderate to strong SW winds in the Icefields area. These are perfect transport speeds, combined with a heavier moist snowpack and a steady input of rain or wet snow has created dangerous soft slab conditions through the forecast area. This slab is sitting over multiple touchy interfaces on all aspects and elevations.

Avalanche Summary

Numerous soft slab and storm slab avalanches have been observed in the forecast region up to size 3. Avalanche control at roadside produced results to size 1 on heavily controlled slopes.

Confidence

Timing or intensity of solar radiation is uncertain on Saturday

Avalanche Problems

Persistent Slabs

Deep soft slabs are sitting on this reactive layer. Triggering of these slabs is possible even in low angle terrain .
Use caution in lee areas in the alpine and treeline. Recent storm snow has formed touchy slabs.Minimize exposure to sun exposed slopes when the solar radiation is strong.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible

Expected Size: 1 - 3

Deep Persistent Slabs

This layer remains a concern in isolated areas above treeline and may be triggered by large loads.
Avoid steep slopes below cornices.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3