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Archived

Avalanche Forecast

Apr 5th, 2015–Apr 6th, 2015
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
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

Regions: Kananaskis.

Watch for the sun poking through the clouds at this time of year.  Radiation from the sun can quickly decrease stability.  These decreases are most apparent on steep, thin solar aspects so keep a eye (or two) looking up.  Happy Easter.

Confidence

Good

Weather Forecast

Temperatures will remain cool on Monday with freezing levels around 1800m.  A mix of sun and cloud is forecast again so keep a keen eye on the sun as its packs a punch these days.  No new snow is forecast and winds will be out of the east in the moderate range (26-40km/hr).

Avalanche Summary

Extensive sluffing up to sz 1.5 out of steeper terrain. Moist releases later in the day up to sz 2 on solar aspects. 

Snowpack Summary

20-30cm recent HN24 (24 hour snowfall total)  with very little wind affect.  This new snow is overlying a variety of other surface from crusts (on most aspects below 2200m and southern aspects up to the peaks) and cold dry powder snow on northern alpine aspects.  Moist snow in the afternoon on solar aspects and on all aspects below 1900m.  New snow sluffs easily from steeper terrain. 

Avalanche Problems

Wind Slabs

Watch for pockets of these slabs along ridgelines and in crossloaded gullies. The entrances of the runs will be the areas to be heads up.
Avoid steep lee and cross-loaded features>

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Possible - Likely

Expected Size: 1 - 2

Loose Dry

Steeper terrain features
Be very cautious with gully features.>

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

Elevations: Alpine, Treeline.

Likelihood: Very Likely - Certain

Expected Size: 1 - 2

Deep Persistent Slabs

No activity on this layer in some time, but its still in forecasters minds.
Avoid convexities or areas with a thin or variable snowpack.>Minimize exposure during periods of heavy loading from new snow, wind.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely

Expected Size: 2 - 5