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Avalanche Forecast

Archived

Jan 5th, 2026–Jan 6th, 2026

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

Regions

McGregor.

New snow and wind are making dangerous avalanche conditions.

Storm slabs built up over the preceding days are likely, especially in wind-loaded terrain.

Confidence

Moderate

  • Uncertainty is due to the limited number of field observations.

Avalanche Summary

This MIN post describes recent touchy storm slabs at the Longworth Lookout area.

Additionally, a very large naturally-triggered size 3.5 avalanche was reported just outside the eastern border of the region on Dec 31.

Snowpack Summary

Up to 100 cm of snow has fallen in the region over the last few days and 30 more is expected through the day building deep and reactive storm slabs, with continued potential for large avalanches.

The prominent mid-December crust is buried up to 150 cm deep and extends to 2200 m. Triggering this layer is considered unlikely, except with large loads.

Weather Summary

Monday Night
Cloudy. 20 cm of snow. 60 km/h southwest ridgetop wind. Treeline temperature -9 °C.

Tuesday
Cloudy. 15 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -7 °C. Freezing level 100 m.

Wednesday
Mostly cloudy. 10 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -8 °C. Freezing level 100 m.

Thursday
Mostly cloudy. 10 cm of snow. 40 km/h west ridgetop wind. Treeline temperature -10 °C.


More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Continue to make conservative terrain choices while the storm snow settles and stabilizes.
  • Avoid freshly wind-loaded terrain features.

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.