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Archived

Avalanche Forecast

Apr 26th, 2015–Apr 26th, 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: Kananaskis.

This will be the last regular bulletin for the Kananaskis Forecast area.  Thanks everyone for a great winter!  Avalanches can still occur as we transition into summer so pay attention to the problems listed here http://www.avalanche.ca/spring

Weather Forecast

Warm temperatures are forecast to move in and dominate the last week of April.  Spring snow storm may still occur with snow at higher elevations and rain down low.  Freezing levels are becomming more commonly over 3000m.

Avalanche Summary

Numerous loose wet avalanches and some deeper slab releases full depth to ground.  Some paths are going full path so be aware of this travelling down low in the valley floors. 

Snowpack Summary

We are into a spring snowpack at this time.  Crusts on all aspects are dominant except pure north aspects in the Alpine.  The snowpack is in a constant state of change at this time.  In the mornings it may or may not be in a frozen state based on the quality of the overnight freeze. As the temperatures warm up stability will decrease throughout the day.  Pay attention to aspect and overhead hazard as you travel... Other things important to consider are rapid loading from rain.  Rain will quickly saturate the snowpack making it heavy and weak.  For a full picture of the different spring time scenarios go to https://avalanche.ca/spring

Avalanche Problems

Loose Wet

Loose wet on all aspects except for true north in alpine areas.
Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet.>

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Likely - Very Likely

Expected Size: 1 - 3

Deep Persistent Slabs

Heat will slowly wake up the deep basal facets and trigger avalanches that fail to ground. 
Be aware of the potential for large, deep avalanches.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 3 - 6

Cornices

  Heat, new snow and winds are causing these features to collapse.
Extra caution needed around cornices with current conditions.>

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 4