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Avalanche Forecast

Archived

Dec 23rd, 2025–Dec 24th, 2025

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

Regions

Glacier.

Strong winds and steady amounts of new snow are refreshing the storm slab problem.

Approach lee and cross-loaded slopes with caution and stick to sheltered spots to find the best snow!

Confidence

Moderate

  • Forecast snowfall amounts are uncertain.

Avalanche Summary

Sporadic natural avalanche activity continues to occur in steep alpine terrain, typically during periods of strong wind. A few size 1.5 avalanches were observed near Grizzly couloir. On Sunday morning a natural size 3, in the Crossover/Herdman area, ran far making it into the mounds in the runout.

Snowpack Summary

Around 100cm of recent snow fall has been redistributed by strong winds in the alpine and exposed tree line areas. In sheltered terrain and below tree line the snow is well settled and supportive. Beneath this a thin rain crust exists up to 2300m and has formed a solid bed-surface for avalanches to run on.

Weather Summary

A series of frontal systems continues to bring moderate snowfall and strong winds.

Tonight Trace precip. Low -9°C. Winds SE 15-25km/hr. Freezing level (FZL): 500m.

Wed Periods of snow, ~10cm. Alpine temp: High 0°C. Wind: South 40 gusting 65km/hr. FZL 1800m.

Thurs Flurries. Snow: 6cm. Alpine temp: High -4°C. Wind SW 30-55km/hr. FZL 1400m.

Fri Snow 14cm. Alpine temp: High -4°C. Wind W light. FZL at valley bottom.

Terrain and Travel Advice

  • Look for signs of instability: whumphing, hollow sounds, shooting cracks, and recent avalanches.
  • Keep in mind a buried crust offers an excellent bed surface for 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.