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Avalanche Forecast

Archived

Feb 9th, 2026–Feb 10th, 2026

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

Regions

Glacier.

Keep the persistent slab problem on your mind at treeline and below.

Shooting cracks and "whumphing" are telling us that human triggering still remains possible.

Confidence

Moderate

  • We are uncertain about how quickly persistent slabs are gaining strength.

Avalanche Summary

Field teams Monday were able to trigger steep unsupported rolls below treeline on surface hoar and a crust.

Natural avalanches up to size 1.5 were observed at valley bottom in Connaught on Sunday.

A solar triggered, natural cycle was observed earlier this week along the highway corridor with avalanches up to size 3.0

Snowpack Summary

10-20 cm of recent snow with moderate to strong wind created wind slabs in the alpine and at treeline. There are a series of crusts in the upper snowpack now from solar and warming events of the last few weeks. 30-60cm beneath the surface is the Jan 26th drought layer which consists of surface hoar, facets, and a crust. This layer is widespread with largest surface hoar in sheltered areas at treeline and below.

The mid and lower snowpack is generally well settled and strong.

Weather Summary

A high-pressure system over the region will give mostly clear skies and no precipitation.

Tonight: Cloudy with flurries. Snow: 1-2cms. Alp low -8°C. Wind SW 20-35km/h. Freezing level (FZL) 800m.

Tues: Mix of sun & cloud. Snow: 1-2cms. Wind SW 15-25 km/h. FZL 1300m

Wed: Cloudy with sunny periods. Snow: 0 cms. High -8. Wind: SW 10km/hr. FZL 1000m

Thur: Cloudy with sunny periods. Snow: 0 cms. High -7. Wind SW 15. FZL 1100m

Terrain and Travel Advice

  • Approach steep and open slopes at and below treeline cautiously, as buried surface hoar may exist.
  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
  • Start on smaller terrain features and gather information before committing to bigger terrain.
  • Keep in mind a buried crust offers an excellent bed surface for 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.