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Avalanche Forecast

Archived

Dec 30th, 2025–Jan 2nd, 2026

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

Regions

Waterton Lakes, Waterton.

Watch out for avalanche activity due to warming, as a temperature inversion will effect upper elevations.

Windslabs exist near ridgelines and in lee features, use caution in wind loaded terrain.

Confidence

Moderate

  • Uncertainty is due to difficult to forecast freezing levels.

Avalanche Summary

Significant natural wind slab avalanches observed in extreme alpine features over the past week. Dry loose avalanches observed during the previous storm cycle.

Snowpack Summary

Up to 40 cm of new snow has been redistributed by moderate to strong winds. Under which sits a melt freeze crust. Below this crust, lies 50 cm of settling snow. The lower snowpack consists of refrozen rain effected layers, which is still moist at ground in places.

Weather Summary

Wed

Sunny. Light wind. Temperature inversion with freezing levels at 3700 m.

Thursday

A mix of sun and cloud. Wind gusting to 30 km/h. Temperature inversion with freezing level at 3100 m.

Friday

Mix of sun and clouds, isolated flurries. Low -2 °C, High 0 °C. Wind gusting to 70 km/hr. Freezing level at 2000 m.

Current weather forecast: Mountain Weather Forecast

Current ECC weather table: Here

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Avoid steep, sun-exposed slopes when the air temperature is warm or when solar radiation is strong.

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind 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.

Loose Wet

Loose Wet avalanches are the release of wet unconsolidated snow or slush. These avalanches typically occur within layers of wet snow near the surface of the snowpack, but they may quickly gouge into lower snowpack layers. Like Loose Dry Avalanches, they start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-wet avalanches include point-release avalanches or sluffs. Loose Wet avalanches can trigger slab avalanches that break into deeper snow layers.