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Avalanche Forecast

Archived

Jan 10th, 2026–Jan 11th, 2026

Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.
Alpine
Natural and human triggered avalanches likely.
Treeline
Natural and human triggered avalanches likely.
Below Treeline
Natural avalanches possible, human triggered probable.
Alpine
Natural avalanches possible, human triggered probable.
Treeline
Natural avalanches possible, human triggered probable.
Below Treeline
Natural avalanches possible, human triggered probable.

Regions

Glacier.

Wind slab hazard will increase throughout the day on Sunday as the storm intensifies in the afternoon.

The persistent weak layer is becoming harder to find but surface hoar can still be found in isolated spots buried 60-100cm deep.

Confidence

Moderate

  • Uncertainty is due to whether buried persistent weak layers become active, triggering avalanches, with the arrival of the forecast weather.

Avalanche Summary

Two size 3 avalanches were reported in the highway corridor on Saturday . Reports of human trigged, size 1 wind slabs at treeline on Friday. Multiple Sz 2 Natural avalanches also observed Macdonald W.

Limited alpine observations over the last few days but neighbouring operations have reported skier triggered persistent slab avalanches up to size 2 on buried surface hoar or a crust.

Snowpack Summary

Up to 100 cm over the past week was accompanied by moderate to strong winds. This has formed wind slabs in the alpine and on exposed slopes at treeline.

Below this weeks storm snow, a layer of surface hoar is buried 60-100cm deep in sheltered areas at treeline & below. On solar slopes, the storm snow sits over a crust which is also acting as failure plan for human triggered avalanches.

The lower snowpack is well settled.

Weather Summary

Tonight Isolated flurries, trace precipitation. Alpine Low -6°C. Winds SW 30 km/h gusting to 55. Freezing level (FZL) 1100m .

Sun Snow, 11 cm. Alpine high -4°C. Winds SW 35km/h. FZL 1400m.

Mon Heavy snowfall, 37 cm. Alpine High -2°C. Winds SW 35-45km/h. FZL 1700m.

Tues Flurries, 12 cm. Alpine high 1°C. Winds SW 30 to 50 km/h. FZL 2400m.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Approach steep and open slopes at and below treeline cautiously, as buried surface hoar may exist.
  • Don't let the desire for deep powder pull you into high consequence terrain.

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.

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.