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Avalanche Forecast

Archived

Dec 7th, 2025–Dec 8th, 2025

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

Regions

Glacier.

Heavy snowfall and strong / extreme wind on Monday will cause the avalanche hazard to rise rapidly.

Storm intensity will ramp up around Noon so don't get caught by surprise. Travel in avalanche terrain is not recommended.

Confidence

Moderate

Avalanche Summary

A natural avalanche cycle has started in steep alpine terrain. Natural activity is expected to increase dramatically on Monday afternoon/ evening as the storm intensifies.

Snowpack Summary

About 50 cm of snow (and counting) is covering a decomposing surface hoar layer in sheltered treeline areas, a thin rime crust on all aspects, and previous wind effect in open alpine terrain.

A rain crust is down 50-90cm in the snowpack, and exists up to approximately 2200m.

Weather Summary

Storm intensifies with highest snowfall amounts overnight Monday

Tonight Flurries, 7cm. Winds SW-30km/h gusting 60. Alpine low -7°C, Freezing level (FZL) 1100m.

Monday Snow, heavy at times. 29cm. High -3. FZL 800m. Wind SW 25km/h gusting to 60 km/h

Tues Snow, 13cm. High -5°C, FZL 1300m. Wind SW 25 gusting 90.

Wed Flurries, 8cm. Low -8, FZL 1200. Wind SW-15 gusting to 50km/h.

Terrain and Travel Advice

  • Avoid avalanche terrain during periods of heavy snowfall.
  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.

Problems

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.