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Archived

Avalanche Forecast

Apr 2nd, 2019–Apr 3rd, 2019
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.

Early starts and finishes are key at this time of year.  Some dry snow on high north aspects and corn (if you get the timing right) on the rest!

Confidence

-

Weather Forecast

A spring pattern has been established these last few weeks.  Cool mornings and hot days are now the norm with afternoon temperatures well above freezing.  Upslope storms may occur as well as rain which can rapidly load the snowpack.  If there is a major change in the snowpack, this bulletin will be updated more frequently.  Until then, avalanche bulletins will only be updated as needed.  Early starts are key at this time of year.

Avalanche Summary

Wet slides either in the form of slabs or loose are occuring daily with the temperature increases.  In general we are seeing slides mainly in the sz 2 range but large avalanches are possible due to the deeper weak layers.  Always be thinking about consequence as you travel. 

Snowpack Summary

Spring is here it would seem!  The snowpack varies in its stability depending on a number of different factors.  Day time high, quality of freeze overnight, aspect and influx of new load from snow or rain.  In general, as temperatures warm up, stability will decrease.  These decreases will be most apparent on solar aspects where the radiation is strong.  The timing on this decrease will vary but can be affected by overnight freeze and aspect.  Poor freezes mean, avalanche danger will increase quickly with warming.  Northern aspects are still holding some dry snow at upper elevations but expect a battle up and down from there. The deep persistent weak facets will be with us until the snow is gone.  Be sure to asses this layer as you travel.  Some good corn is out there if you can get the timing right!!  Start Early and be home early and avoid the heat of the day

Avalanche Problems

Deep Persistent Slabs

Loose wet slides may step down to deeper layers and involve the entire snowpack. 
Be aware of thin areas that may propogate to deeper instabilites.Be aware of the potential for full depth avalanches due to deeply buried weak layers.Be aware of the potential for wide propagations due to the presence of hard windslabs.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 2 - 3

Loose Wet

Loose wet slides are occurring in the upper snowpack.  These may step down to deeper layers
Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet.Use extra caution on solar slopes or if the snow is moist or wet.

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

Elevations: All elevations.

Likelihood: Likely - Very Likely

Expected Size: 1 - 2