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Avalanche Forecast

Archived

Mar 26th, 2026–Mar 29th, 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, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Waterton Lakes, Waterton.

35 cm of new snow accompanied by moderate to strong winds have continued to form wind slabs in lee terrain. Keep an eye out for signs of wind effect and warming. We will have a couple days of pleasant weather prior to the Sunday's storm.

Confidence

High

  • The snowpack structure is well understood.

Avalanche Summary

Several dry loose avalanches, up to size 1.5, observed in the alpine.

Snowpack Summary

30 cm of recent snowfall is being redistributed by moderate SW winds into wind slabs in lee features. A widespread rain crust sits below. Under the crust is moist snow that is slowly refreezing. The mid and lower snowpack is well settled.

Weather Summary

Friday

Sunny. Alpine Low of -8 °C, High of 1 °C. SW wind gusting to 60 km/h. Freezing level at 2200 m.

Saturday

Sunny with cloudy periods. Alpine Low of 0 °C, High of 4 °C. SW wind gusting to 55 km/h. Freezing level at 2400 m.

Sunday

Up to 7 cm of snow. Alpine Low of -2 °C, High of -1 °C. SW wind gusting to 60 km/h. Freezing level at 2000 m.

Current weather forecast: Mountain Weather Forecast

Terrain and Travel Advice

  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Rocks will heat up with daytime warming and may become trigger points for loose wet avalanches.

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.