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Avalanche Forecast

Archived

Feb 10th, 2025–Feb 11th, 2025

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

Regions

Glacier.

So... cold.

Make sure you have the gear to stay warm if any unexpected delays occur.

Confidence

High

Avalanche Summary

Natural avalanche activity has eased, however human triggering remains possible.

Neighboring operations are still reporting rider & remote triggered avalanches on the Jan 30th layer.

Snowpack Summary

Cold temperatures are faceting out the isolated pockets of wind slab, decreasing the reactivity. Widespread wind effect is still prevent in exposed terrain.

A weak layer of surface hoar, facets and/or suncrust (Jan 30th drought layer) is 30-50cm down from the snow surface.

The Jan 7th layer is down 50-80cm, and is comprised of surface hoar in sheltered areas and/or a thin crust on steep S aspects.

Weather Summary

The arctic ridge is firmly planted. Mainly sunny skies and cold temperatures are forecast into the foreseeable future.

Tonight Clear periods. Alpine low -21°C. Ridge wind NW 15km/hr.

Tues Mix of sun and cloud. Alpine high -16°C. NW wind 10-20km/h.

Wed Mix of sun and cloud. Alpine high -16°C. Wind SW 10-20km/hr.

Thurs Mix of sun and cloud. Alpine high -9°C! Wind SE 10-20km/hr.

Terrain and Travel Advice

  • Be aware of the potential for remote triggering and large avalanches due to buried surface hoar.
  • Keep in mind that human triggering may persist as natural avalanches taper off.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.

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.

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.