Avalanche Forecast

Issued: Feb 21st, 2025 2:00PM

The alpine rating is considerable, the treeline rating is moderate, and the below treeline rating is low. Known problems include Wind Slabs and Loose Dry.

Avalanche Canada Kananaskis, Avalanche Canada

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A storm is due to hit the kananaskis region starting tonight. Strong to extreme winds, significant snow and warm temps are a perfect recipe for a natural cycle on our very weak and faceted snowpack.

Summary

Confidence

Moderate

Avalanche Summary

A field team out today and there was no new activity observed.

Snowpack Summary

Up to 5cm of recent snow is overlying mostly wind slabs in the alpine. These near surface wind slabs continue to be the most concerning issue in our snowpack. They are essentially widespread, but vary in thickness and density. Areas of hard slab are the most concerning as they are the most likely to propagate. In sheltered areas, or areas that haven't seen travel the snowpack is still very weak. While walking or skiing it isn't uncommon to punch to ground. Snowpack depths remain well below average. The snow profile below shows how weak the snowpack is in most areas.

Weather Summary

The change appears to be on the way.

Friday night should see the start of a good storm with 4cm overnight. Night time low of -8 and the winds will be in the strong range from the South West

Saturday it will continue to snow with an additional 11cm by end of day. Day time high of -5 and 70km/h South West winds

Sunday could have yet another 17cm with the winds slightly shifting to Westerly and 75 km/h.

The freezing levels are also jumping to 1600-1800m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avoid avalanche terrain during periods of heavy loading from new snow, wind, or rain.
  • Wind slabs are most reactive during their formation.
  • Avoid steep terrain, including convex rolls, or areas with a thin, rocky, or variable snowpack.
  • Be careful as you transition into wind-affected terrain.

Problems

Wind Slabs

An icon showing Wind Slabs

Storm snow, strong winds and warm temps are sure to build new reactive slabs.

Aspects: North, North East, East, South East, North West.

Elevations: Alpine, Treeline.

Likelihood

Likely

Expected Size

1 - 2

Loose Dry

An icon showing Loose Dry

Sluffing off steep features may entrain a lot of mass with the surface facets.

Aspects: All aspects.

Elevations: All elevations.

Likelihood

Very Likely

Expected Size

1 - 2

Valid until: Feb 22nd, 2025 3:00PM

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