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Archived

Avalanche Forecast

Apr 2nd, 2015–Apr 3rd, 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
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
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
1: Low
The avalanche danger rating below treeline will be low

Regions: Kananaskis.

New snow is in the forecast for Saturday.  Amounts are uncertain at this time as well as there is low confidence in this system so stay tuned.

Confidence

Fair - Track of incoming weather systems is uncertain on Saturday

Weather Forecast

A cooling trend is happenning over the next few days and then on Saturday, there is snow in the forecast.  Models vary at this time but we may see up to 20cm of new snow.  Winds are forecast to be calm over the next few days.

Avalanche Summary

No new avalanches were observed. 

Snowpack Summary

10-15cm of snow is overlying the 0327 interface at 2200m and above.  There was also surprisingly little wind affect despite strong winds earlier in the week.  Field teams on Thursday were in the Turbine canyon area and found a generally well settled snowpack above 2200m.  In the top 30cm of the snowpack there are a series of crusts from last weeks heat.  No shears were observed on these crusts but that may change when we get a large load of new snow like we usually do in the spring.  The crust remained intact throughout the day on Thursday as temperatures remained cool.  At lower elevations, when the crust breaks down, the snowpack is purely isothermal. 

Avalanche Problems

Wind Slabs

Ridgelines and immediate lee features will be of concern.
Caution in lee and cross-loaded terrain near ridge crests.>

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 3

Deep Persistent Slabs

Unlikely to trigger, but large triggers such as cornices may wake it up.  Other things such as rain may also wake up this basal weakness.
Carefully evaluate and use caution around thin snowpack areas.>Avoid convexities or areas with a thin or variable snowpack.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 5