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Avalanche Forecast

Archived

Mar 4th, 2026–Mar 7th, 2026

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

Extreme winds from last week have left extensive wind effect in its path creating variable surfaces on all aspects and elevations.

Up to 10 cm of new snow with westerly winds are forecasted. Watch for fresh wind slabs in lee features.

Confidence

Moderate

  • We are uncertain about forecast precipitation amounts.

Avalanche Summary

No new avalanches have been observed the past few days but some older wet loose and wind slab avalanches are still visible.

Snowpack Summary

A few cm of new snow sits over widespread wind effect at all elevations. Exposed windward slopes are scoured to crust and sastrugi is common in open terrain. On northerly aspects there is less wind effect. Recent warm temps and solar input have moistened the surface snow at treeline and below. Beneath this, 30–50 cm of settled snow overlies crusts and facets. The lower snowpack is generally well settled.

Weather Summary

Thursday

Isolated flurries up to 2 cm. Low of -3 °C. High of -1 °C. Wind gusting to 35 km/h. Freezing level of 2000 m.

Friday

Isolated flurries up to 2 cm. Low of -6 °C. High of -3 °C. Wind gusting to 45 km/h. Freezing level of 1800 m.

Saturday

Isolated flurries up to 2 cm. Low of -4 °C. High of 1 °C. Wind gusting to 70 km/h. Freezing level of 2700 m.

Current weather forecast: Mountain Weather Forecast

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.

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.