Avalanche Forecast

Archived

Dec 30th, 2025–Dec 31st, 2025

Alpine

Natural and human triggered avalanches likely.

Treeline

Natural and human triggered avalanches likely.

Below Treeline

Below Threshold.

Alpine

Natural and human triggered avalanches likely.

Treeline

Natural avalanches possible, human triggered probable.

Below Treeline

Below Threshold.

Alpine

Natural and human triggered avalanches likely.

Treeline

Natural avalanches possible, human triggered probable.

Below Treeline

Below Threshold.

Regions

Yukon, Tutshi, Wheaton, White Pass East, White Pass West.

Only simple terrain with no exposure to overhead hazard is suitable for the current conditions.

Storm slabs have the potential to step down and trigger large, destructive avalanches.

Confidence

Low

Uncertainty is due to the limited number of field observations.

Avalanche Summary

On Monday, several natural avalanches up to size 3 were observed from the road in White Pass. Check out this MIN for more details.

Observations are still limited at this time.

Snowpack Summary

Up to 45 cm of new snow is now sitting on a heavily wind-affected and faceted snowpack.

Snowpack depths vary widely due to wind, but average around 150 cm across the region.

Weather Summary

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

Avoid exposure to overhead avalanche terrain; avalanches may run surprisingly far.
Storm slabs in motion may step down to deeper layers resulting in large avalanches.
Keep your guard up at lower elevations. Storms slabs have been reactive at all elevations.

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.