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Avalanche Forecast

Archived

Mar 21st, 2026–Mar 22nd, 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.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Crowsnest North, Crowsnest South.

Avalanches are possible at upper elevations where dry new snow fell.

Travelling conditions are tricky where a thick surface crust is present.

Continually assess conditions as you travel.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.
  • We are uncertain about forecast precipitation amounts.

Avalanche Summary

On Friday, continued evidence of a widespread wet cycle, with numerous natural avalanches (up to size 3) in the surrounding terrain of Castle Mountain. Rider-triggered wet loose avalanches (up to size 1.5) were also reported.

If you are heading into the backcountry, please consider sharing conditions via the MIN.

Snowpack Summary

By Sunday morning, up to 15 cm of new snow may have fallen at upper elevations. This will overlay a developing melt-freeze crust and/or wet surface snow.

Below this, 30 to 50 cm of wet snow sits above a crust, which is slowly breaking down.

The mid and lower snowpack are generally well consolidated with early-season crusts deep in the snowpack.

The snowpack rapidly diminishes at lower elevations and is moist or saturated to the ground in most areas.

As freezing levels drop, a widespread crust will form on all aspects at all elevations.

Weather Summary

Saturday Night
Partly cloudy. Up to 5 cm of snow. 50 km/h west ridgetop wind. Treeline temperature -6 °C. Freezing level at valley bottom.

Sunday
Mostly sunny. 50 km/h west ridgetop wind. Treeline temperature -3 °C. Freezing level 1800 m.

Monday
Sunny. 40 km/h west ridgetop wind. Treeline temperature 0 °C. Freezing level 2200 m.

Tuesday
Mostly cloudy. Up to 5 cm of snow. 40 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1800 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.
  • Closely monitor how the new snow is bonding to the crust.

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.