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Avalanche Forecast

Archived

Mar 29th, 2022–Mar 30th, 2022

Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Little Yoho.

One more morning of clear skies to do some amazing tours before cloud moves in around noon on Wednesday. Should the cloud and flurries develop later the hazard may be higher in areas with prolonged sun exposure.

Weather Forecast

Wednesday morning will be clear with cloud building and isolated flurries developing in the afternoon. Cooler temperatures and cloud with isolated flurries are expected Thursday through Friday. For more details click here.

Snowpack Summary

Surface melt freeze crusts exist on all aspects up to approx. 2300m. On high elevation north aspects dry snow can be found. The mid-pack is well settled but has several persistent layers consisting of crusts and/or facets. These are currently unreactive to skier triggering but may wake up when the spring heat returns and penetrates the snowpack.

Avalanche Summary

A ski touring party reported a cornice triggered size three slab on the north side of Cathedral Peak on Sunday. The alpine remained cool on Tuesday with no new activity noted. Lake Louise reported ski cutting wet loose avalanches at and below treeline on Tuesday and isothermal conditions on steep solar aspects below treeline.

Confidence

Timing of incoming weather systems is uncertain

Problems

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.

Cornices

Cornice Fall is the release of an overhanging mass of snow that forms as the wind moves snow over a sharp terrain feature, such as a ridge, and deposits snow on the downwind (leeward) side. Cornices range in size from small wind drifts of soft snow to large overhangs of hard snow that are 30 feet (10 meters) or taller. They can break off the terrain suddenly and pull back onto the ridge top and catch people by surprise even on the flat ground above the slope. Even small cornices can have enough mass to be destructive and deadly. Cornice Fall can entrain loose surface snow or trigger slab avalanches.