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Avalanche Forecast

Archived

Dec 22nd, 2025–Dec 23rd, 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 possible, human triggered probable.
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

We continue to see sporadic natural avalanche activity out of steep alpine terrain, typically during times of strong wind gusts. On Sunday morning a natural size 3, out of the Crossover/Herdman area, ran far making it into the mounds in the runout.

Some reports are coming in about sluffing in steep terrain at treeline and below.

Check out this great MIN about a close call in the Asulkan drainage where riders triggered a size 2 avalanche.

Snowpack Summary

Last week's 60-90 cm of storm snow has been redistributed by strong to extreme southerly winds. Beneath this recent storm snow, a thin crust exists up to 2300m. This crust has been solid bed-surface for avalanches to run on.

Approximately 140cms of settled snow sits on the November rain crust. A spotty layer of surface hoar is just above the Nov Crust and exists at treeline in sheltered areas.

Weather Summary

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

Tonight Flurries, 10 cm. Low -10°C. Winds SW 40 gusting to 70km/hr. Freezing level (FZL): 700m

Tues Mix of sun & cloud. Alpine temp: High -10°C. Wind SW 25-40km/hr. FZL 700m

Wed Periods of snow, 12cm. Alpine temp: High -2°C. Wind: South 35-55km/hr. FZL 1800m

Thurs Flurries. Snow: 6cms. Alpine temp: High -6°C. Wind SW 30-75km/hr. FZL 1300m

Terrain and Travel Advice

  • Keep in mind a buried crust offers an excellent bed surface for avalanches.
  • 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.