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Avalanche Forecast

Archived

Mar 17th, 2021–Mar 18th, 2021

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

Regions

Kananaskis.

Danger rating are tied closely to aspect and time of day. As temps increase expect the snow to become less stable especially on solar aspects. Danger can swing from moderate to HIGH in the heat of the day so pay close attention to aspect, temp, and quality of freeze overnight.  

Confidence

High -

Weather Forecast

Well a spring pattern is emerging! Thursday will be a warm day with freezing levels near 2400m and daytime highs around 4deg. The sky is forecast to be blue with light winds throughout the day!  

Avalanche Summary

No new avalanches have been observed in the past 24hrs.  

Snowpack Summary

Melt freeze cycle seems to be the name of the game right now! Melting during the day and becoming less stable and freezing at night. On Wednesday the surface of the snow didnt begin to break down until mid afternoon and winds and temps kept it cool. With these kind of Spring conditions, timing and aspect is everything. The alpine appears to be wind affected except for sheltered north aspects. On non-solar aspects there are still some buried wind slabs in the upper 60 of the snowpack that are worth investigating before committing to bigger terrain. Be alert on the changing snow conditions under your skis. There are plenty of big cornices out there so take the time to plan your trip to avoid them.

Terrain and Travel

  • Avoid sun exposed slopes when the solar radiation is strong, especially if snow is moist or wet
  • Avoid rock outcroppings, convexities, and anywhere the snowpack is thin and/or variable.
  • The more the snow feels like a slurpy, the more likely loose wet avalanches will become.
  • Be alert to conditions that change with elevation and sun exposure.

Problems

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.

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.