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Avalanche Forecast

Archived

Jan 9th, 2024–Jan 10th, 2024

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

We've all been waiting for the snow to come, don't let the powder fever lure you into high consequence terrain.

Allow time for the new snow to bond before increasing your exposure

Confidence

Moderate

Avalanche Summary

A natural avalanche cycle occurred on Tuesday with storm slabs avalanches up to size 2.5 reaching into the run out zones. Frequent flyer ran across the skin track in the Connaught valley. In the past few days several human triggered avalanches occurred failing at the base of the new snow from late last week.

In steep terrain loose dry avalanches are initiating easily and one skier was taken for a ride near Youngs Peak.

Snowpack Summary

40-50cms of recent storm snow sits on a sun crust on solar aspects; firm wind effect in the alpine; and soft facetted snow on sheltered N aspects.

Below 2100m there is a crust down 70-80cm (from Dec 5th/6th).

The Dec 1 surface hoar layer is down 90-120cm and is decomposing. However, it still shows isolated signs of potential reactivity in snowpack tests.

Weather Summary

The remnants of the storm passing over will bring flurries and easing winds before we enter the deep freeze on Thursday when the arctic air mass envelops the southern interior.

Tonight: trace of snow, light W winds, low -14 °C, freezing level at valley bottom (FZL-VB)

Wed: trace, light W winds, low -22 °C,FZL-VB

Thurs: light E winds, high -22 °C, low -36 °C, FZL-VB

Fri: sunny, light E winds, low -36 °C, FZL-VB

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Be carefull with sluffing in steep terrain, especially above cliffs and terrain traps.
  • If triggered, storm slabs in-motion may step down to deeper layers and result in very large avalanches.

Problems

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.

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.