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Avalanche Forecast

Archived

Dec 24th, 2025–Dec 25th, 2025

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

Regions

Glacier.

Steady snowfall and moderate winds are maintaining the storm slab problem.

Approach lee and cross-loaded slopes with caution and stick to sheltered terrain 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. Two size 1.5s were observed near Grizzly couloir on Tuesday and size 2 avalanches from Mt McDonald Wednesday.

Snowpack Summary

Over 100cm of snow has fallen over the last 8 days. In the alpine and open tree line areas this has been redistributed by strong winds. 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

The parade of storms continues bringing regular snowfall with strong winds.

Tonight Snow easing 8cm. Alpine Low -7°C. Wind SW 30-45km/hr. Freezing level (FZL) 1700m.

Thurs Flurries 8cm. Alpine high -5°C. Wind W light gusting 40km/hr. FZL 1100m.

Fri Snow 15cm. Alpine high -6°C. Wind SW light gusting 50 km/hr. FZL 1100m.

Sat Sun & cloud. Alpine high -16°C. Winds SW light. FZL at valley bottom.

Terrain and Travel Advice

  • 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.