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Avalanche Forecast

Archived

Apr 26th, 2022–Apr 27th, 2022

Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.
Alpine
Below Threshold.
Treeline
Below Threshold.
Below Treeline
Below Threshold.

Regions

Jasper.

Up to 15cm of new snow has fallen in the last 24 hours at Tree Line elevations and above. If the winds pick up this will create fresh windslabs, keep this in mind when selecting objectives for the day.

Weather Forecast

Wednesday, cloudy with sunny periods and isolated flurries. Trace amounts. Winds 2okm/hr gusting to 45 km/hr. Freezing level 1600m. On Thursday expect cloudy with sunny periods, trace amounts of snow and freezing levels to 1700m.

Snowpack Summary

15cm of new snow above 1700m. This overlies temperature crust on steep solar aspects. Sheltered locations may hold 15-30cm of spring powder snow over previous wind surfaces and crusts. Several thick and thin crusts exist in the upper snowpack depending on aspect, elevation, and angle. The middle of the snowpack is supportive and well consolidated.

Avalanche Summary

Maligne and Icefield's patrol on April 26th observed several loose wet avalanches up to size 2 mainly solar triggered.  Loose Dry avalanches up to size 1. Consult the Mountain Information Network for recent observations, and please consider submitting a MIN report .

Confidence

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.

Loose Dry

Loose Dry avalanches are the release of dry unconsolidated snow and typically occur within layers of soft snow near the surface of the snowpack. These avalanches start at a point and entrain snow as they move downhill, forming a fan-shaped avalanche. Other names for loose-dry avalanches include point-release avalanches or sluffs.