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Avalanche Forecast

Archived

Dec 30th, 2023–Dec 31st, 2023

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.

It's getting harder and harder to find untracked lines, don't let your search for fresh snow push you in to terrain that you would not have otherwise considered skiing.

And, remember that the days are real short this time of year. If you find yourself in a pickle after 3PM, you will most likely be spending the night out...

Confidence

High

Avalanche Summary

There were several loose snow avalanches, up to size 2.5, triggered by warming temps and solar input Friday-Saturday,

Snowpack Summary

Traces of fresh snow will cover wind effect/windslabs in the alpine and exposed treeline, a sun crust and frozen debris on solar aspects, and soft facetted old snow on sheltered N aspects.

Below 2100 m there is a strong rain crust down 40-60cm (from Dec 5th/6th).

The Dec 1 surface hoar is down 60-100cm, and has not shown signs of reactivity in our area for several days.

In shallow areas at upper elevations, the base of the snowpack is faceted and unsupportive.

Weather Summary

A bit of fresh snow and cooling temps overnight in to Sunday, as the high pressure is briefly pushed aside.

Tonight: Increasing cloudiness and isolated flurries. Alpine Low -4°C. Freezing level (Fzl) 1600m. Moderate SW Ridgetop Wind.

Sunday: Isolated Flurries. High -4°C. Fzl 1600m. Light West wind.

Mon: Sunny periods. Low -10 °C, High -8 °C. Light S wind.

Tues: Sunny periods. Low -9 °C, High -6 °C. Light ridge wind.

Terrain and Travel Advice

  • Exercise caution on steep, unsupported slopes.

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.