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Archived

Avalanche Forecast

May 1st, 2014–May 2nd, 2014
Alpine
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
Below Treeline
4: High
The avalanche danger rating below treeline will be high
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
4: High
The avalanche danger rating below treeline will be high
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
4: High
The avalanche danger rating below treeline will be high

Regions: Kananaskis.

With no freeze likely overnight and rain forecast on Friday we can expect natural avalanche activity to continue.  As temps drop on Sat and sunday, Avalanche activity will decrease.

Weather Forecast

Well here comes another blast of winter.  Up to 50cm of new snow is expected over the next few days with freezing levels around 2300m.  This lack of freeze at lower elevations will trigger another round of natural avalanche activity at lower elevations on all aspects.  THe next few days will not be the time to get out skiing.

Avalanche Summary

Lots of loose wet, and wet slabs up to sz 3 have been observed over the past 24hrs. THese slabs have been occuring on all aspects and failing down to ground in many areas.

Snowpack Summary

The warm temps are starting to penetrate deeper into the snowpack.  Isothermal snow is now being found up to treeline in some areas.  Above this, expect to have surface crusts that break down later in the day resulting in some corn snow,  Remember though what goes up must come down and you dont want to be wading through isothermal snow back to the trailhead.

Avalanche Problems

Deep Persistent Slabs

The basal facets are producing large destructive slab avalanches that are failing on the basal facets.
Pay attention to overhead hazards like cornices.>Avoid all avalanche terrain during periods of heavy loading from new snow, wind, or rain.>

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 3 - 6

Storm Slabs

New Storm slabs will be building in Alpine terrain with the influx of new snow and wind.
Avoid all avalanche terrain during periods of heavy loading from new snow, wind, or rain.>

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

Elevations: Alpine.

Likelihood: Likely - Very Likely

Expected Size: 1 - 3

Loose Wet

Be wary of slopes that did not previously avalanche - even on low angle terrain.>Avoid avalanche terrain during periods of rain.>

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

Elevations: Alpine, Treeline.

Likelihood: Likely - Very Likely

Expected Size: 1 - 3