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Avalanche Forecast

Archived

Apr 7th, 2021–Apr 8th, 2021

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Kananaskis.

Winds are forecast to become light overnight with 15-20cm of new snow forecast. Evaluate the winds and snow amounts as you transition into open wind affected areas on Thursday as the danger may be higher than forecast. Welcome back to winter! 

Confidence

Moderate - Forecast snowfall amounts are uncertain.

Weather Forecast

15-20cm of new snow is forecast overnight with cooling temperatures and the winds fading to light! Phew finally! Expect a cloudy day and temps around -10 to start the day.  

Avalanche Summary

No new avalanches were observed on Wednesday. 

Snowpack Summary

Well the winds arrived over the past 24hrs and they left there mark on the snowpack. A breakable windcrust was pretty widespread in the alpine and hooky skiing was the word of the day. The only dry powder skiing we found was at treeline and below on pure north aspects. Solar aspects have a melt freeze crust that is supportive in the morning, and less snow as the day warms up. 15-20cm of snow is expected overnight and it will be important to check the bond between this new snow and the underlying surface. One good thing is the wind is forecast to be light so new windslabs may only be isolated to wind affected terrain such as cols and ridgelines. pay close attention as you transition into wind affected terrain. 

Terrain and Travel

  • Avoid steep convex slopes.
  • Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet
  • Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.