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Avalanche Forecast

Archived

Apr 10th, 2024–Apr 11th, 2024

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, human triggered possible.
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

Glacier.

It is wise to start your day early, taking advantage of the fast travel conditions while the snow surface is frozen.

Good winter skiing can be found on true northerly aspects in the Alpine and upper Tree-line. Elsewhere expect to find sun-effect on the surface, making travel challenging.

Confidence

High

Avalanche Summary

Today, two sz 1 storm slabs were remoted above the Bonney Moraines on east aspects, sliding on the Apr 9 melt/freeze crust.

Yesterday, a field team in the Christiana Ridge zone was able to ski-control moist storm slabs on steep solar aspects. Though sluggish to start moving, these slow slabs gathered considerable mass, sliding on the April 9 melt/freeze crust.

Snowpack Summary

In the Alpine and high Tree-line, 20-30cm of snow sits over a firm crust on solar aspects and well settled dry snow on northerly aspects.

At tree line the snow depth is at a record low of around 220cm. The Feb 3rd crust/facet layer persists at upper elevations, buried down 80-140cm.

Below tree line is a well-settled spring snowpack with a strong surface crust that will break down during the heat of the day.

Weather Summary

Flurries return Thurs, with continuing unsettled weather forecasted through the weekend

Tonight: Cloudy, Alp low -4°C, light SW winds, freezing level (FZL) 1500m.

Thurs: Flurries, 5-10cm, Alp high -1°C, light/mod SW winds, FZL 1900m.

Fri: Flurries, 5cm, Alp high 1°C, light/gusting mod SW winds, FZL 2100m.

Sat: Mix of sun/cloud, Alp high 1°C, light/gusting mod SW winds, FZL 2300m.

Terrain and Travel Advice

  • Minimize exposure to sun-exposed slopes when the solar radiation is strong.
  • Carefully monitor the bond between the new snow and old surface.
  • Watch for signs of instability like whumpfing, hollow sounds, shooting cracks or recent avalanches.

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.