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Avalanche Forecast

Archived

Mar 31st, 2022–Apr 3rd, 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, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.

Regions

Waterton Lakes.

Spring has us in a diurnal cycle.

Travel conditions are fast and firm in the morning, don't forget your ski crampons. Plan to wait for corn snow in the afternoon.

Minimize exposer to overhead hazard and steep rock ares during peak day time warming.

Weather Forecast

Fri: Scattered clouds, clearing near noon. Alpine high zero with light SW winds. Freezing level 1800m..

Sat: Cloudy with isolated flurries in evening. Alpine high 0 with light to moderate SW winds. FL 1800m.

Sun: Cloudy with flurries in morning. Alpine high of +3. Winds increasing throughout the day to strong from the NE. FL 2000m.

Snowpack Summary

We are seeing good overnight refreezes that deteriorate with day time warming. Moist surface snow on all aspects to 1800m, higher on solar slopes. Above 1800m a rain crust exists on all aspects well into into ALP. A series of crusts and windslab make up the midpack. Lower snowpack is well settled 1F to P. HS 250-300 cm near the continental divide.

Avalanche Summary

Numerous wet loose avalanches to size one have been reported throughout the week with day time warming. Few large results from cornice trigger to size 3. Please report any observations to the Mountain Information Network.

Confidence

Freezing levels are 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.