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Avalanche Forecast

Archived

Mar 28th, 2022–Mar 31st, 2022

Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches unlikely, human triggered possible.
Treeline
Natural avalanches unlikely, human triggered possible.
Below Treeline
Natural avalanches unlikely, human triggered possible.
Alpine
Natural avalanches unlikely.
Treeline
Natural avalanches unlikely.
Below Treeline
Natural avalanches unlikely.

Regions

Waterton Lakes.

Cooler temps for the next couple days = all about timing. Expect firm snow in the morning and corn in the afternoon.

Snow is disappearing quickly in the park, south facing ice climbs have fallen down. Come get that last bits of winter while it lasts.

Weather Forecast

Tues Cloudy in the AM with flurries, clearing near noon. Alpine high near zero with M-N winds. FL 1800m

Wed: Clear skies with an alpine high +1. Winds  S-SW and FL 1800m

Thurs: Cloudy with flurries and an alpine high of -1. Winds L-M SW and FL 1600m

Snowpack Summary

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

Several new natural wet loose avalanches to size 2 were observed on Monday. One notable slab avalanche from a thin rocky start zone, initiated at peak solar and entrained wet loose to size 3.  Please report any observations to the Mountain Information Network.

Confidence

Timing or intensity of solar radiation 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.