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Avalanche Forecast

Archived

Apr 7th, 2025–Apr 10th, 2025

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, human triggered possible.
Below Treeline
Natural avalanches unlikely.

Regions

Waterton Lakes, Waterton.

Unsettled, cooling weather is promoting a refrozen snowpack with lingering wind slabs in the alpine.

Confidence

Moderate

Avalanche Summary

Numerous wet loose avalanches up to size 1.5 have been observed, primarily occurring in solar-affected storm snow sitting on top of a melt-freeze crust.

Snowpack Summary

The snowpack consists of 15 - 30 cm of old storm snow that is now moist and beginning to refreeze, except on high north-facing slopes where it remains dry. This overlies a melt-freeze crust and a deeper snowpack that is slowly refreezing. The persistent January drought layer is buried 50–130 cm deep, and total snow depths at treeline range from 130–200 cm.

Weather Summary

Unsettled weather the next few days with cooler temps and occasional flurries. Warming back up on Thursday. See photo for a more detailed 3-day forecast.

Check out the Mountain Weather Forecast for the most up to date information.

Terrain and Travel Advice

  • Carefully evaluate big and steep terrain features before committing to them.
  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.

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.