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Avalanche Forecast

Archived

Apr 8th, 2022–Apr 9th, 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

Jasper.

Quick cool down overnight Friday will tighten up the snowpack for now and into the forecasted future.

(cautiously, he predicts..) It appears to be setting up for a stellar week of touring and exploration in the Rockies!

Weather Forecast

Variable weather through out the forecast region with rain and/or snow possible at TL and below. Best to select area specific forecasts via Avalanche Canada's Mountain Weather Forecasts resources.

Snowpack Summary

Varied snowpack with elevation and aspect. Sunny, BTL slopes mostly below threshold, definitely out below ~1600m. TL and below, expect a mixed bag of dust on crusts with improving support underfoot as the temps cool. Above TL, new precip and strong winds will build new windslabs on N to E aspects. Sheltered areas TL and above, could be epic!?

Avalanche Summary

Crazy winds and mixed precip in the Three Valley Confluence at all elevations. Poor visibility TL and abv. on patrol in Maligne. Avalanche control produced small surface slabs (wind) and loose wet , up to sz 1.5.

Confidence

Forecast snowfall amounts are uncertain on Saturday

Problems

Wind Slabs

Wind Slab avalanches are the release of a cohesive layer of snow (a slab) formed by the wind. Wind typically transports snow from the upwind sides of terrain features and deposits snow on the downwind side. Wind slabs are often smooth and rounded and sometimes sound hollow, and can range from soft to hard. Wind slabs that form over a persistent weak layer (surface hoar, depth hoar, or near-surface facets) may be termed Persistent Slabs or may develop into Persistent Slabs.

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.