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Avalanche Forecast

Archived

Mar 6th, 2022–Mar 7th, 2022

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

Regions

Glacier.

Watch for small pockets of wind slabs that could potentially form in the alpine from the moderate North West winds as the cold front pushes into the region.

Good snow quality found on sheltered polar aspects.

Weather Forecast

Don't put those down layers away just yet! A cold front will slither its way down from the North starting Monday afternoon dropping temps down to -20 by Wednesday

Monday will see a mix of sun and cloud with snow flurries (1-5cm). Ridge top winds 25-40km/hr from the North-West and an alpine high of -7. Clear skies and cold temps for Tuesday and Wednesday.

Snowpack Summary

40cm of settling snow sits on top of the Feb 26th interface of small surface hoar in sheltered areas and a crust on steep solar aspects. A surface crust exists up to ~1500m on all aspects and higher on solar aspects. Soft, dry snow snow can be found in sheltered areas on Northerly terrain features.

Avalanche Summary

Several skier accidental avalanches in the size 1.5 range over the last few days, which likely involved the Feb 26th interface.

A size 2.5 natural cornice failure triggered a decent sized slab above the Little Sifton Traverse exit on Saturday.

Confidence

Timing or intensity of solar radiation is uncertain on Monday

Problems

Persistent Slabs

Persistent Slab avalanches are the release of a cohesive layer of snow (a slab) in the middle to upper snowpack, when the bond to an underlying persistent weak layer breaks. Persistent layers include: surface hoar, depth hoar, near-surface facets, or faceted snow. Persistent weak layers can continue to produce avalanches for days, weeks or even months, making them especially dangerous and tricky. As additional snow and wind events build a thicker slab on top of the persistent weak layer, this avalanche problem may develop into a Deep Persistent Slab.