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Avalanche Forecast

Archived

Apr 21st, 2022–Apr 22nd, 2022

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

Regions

Yukon.

Avalanche conditions are generally safe. Be mindful of your exposure to cornices when travelling on and below ridgelines. 

Confidence

High - The snowpack structure is generally well understood.

Weather Forecast

THURSDAY NIGHT: Cloud cover increasing. Light southerly winds. Freezing level lowering to valley bottom.

FRIDAY: Cloudy with light flurries in the afternoon. Light southerly winds. Freezing level rising to 1000 m. Treeline temperatures around -4 C.

SATURDAY: Cloudy with snowfall, 5 cm of accumulation. Light to moderate southeasterly winds. Freezing level rising to 1400 m. Treeline temperatures around -1 C.

SUNDAY: Cloudy with snowfall, up to 5 cm of accumulation. Light to moderate southeasterly winds. Freezing level rising to 1300 m. Treeline temperatures around -2 C.

Avalanche Summary

No new avalanches have been reported over the past week. 

Reports are limited at this time of year. Please let us know what you're seeing by filling out a MIN report!

Snowpack Summary

A light amount of new snow has added to heavily wind-affected surfaces from last week's strong northerly winds.

On south and west facing slopes up to 1400 m a surface crust from spring sunshine can be found, while other aspects hold dry snow. The mid-snowpack is generally strong, overlying weak basal facets at the base of the snowpack. 

Terrain and Travel

  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

Problems

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.