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Avalanche Forecast

Archived

Jan 4th, 2022–Jan 5th, 2022

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

Regions

Glacier.

Good skiing can be found throughout the park.

Do keep an eye out for stiffer snow in wind affected areas, indicating a slab that might need a little more time to bond with the underlying facets.

Weather Forecast

Cool with clouds, then moving into another stormy period Thurs/Fri

Tonight: Cloudy, low -16*C, light SW winds

Wed: Mix of sun/cloud, Alp high -15*C, light SW winds

Thurs: Snow, 15cm, Alp high -10*C, mod S winds

Fri: Flurries, 10cm, Alp high -9*C, mod/gusting strong SW winds

Snowpack Summary

~30cm of new snow has been moved by moderate S'ly winds, creating a storm/wind slab that is slowly bonding to the faceted snow from the recent cold temps. Wind slab exists in the alpine along ridge crests and open features down into tree line. The Dec 1 crust is buried 80-130cm, with faceted snow above and below it (especially in shallow areas).

Avalanche Summary

Several avalanches to sz 3 were observed in the steep paths of Macdonald and Tupper, related to wind spikes and the rapid redistribution of available snow early Tues morning. No observations of avalanches stepping down to deeper layers.

Frequent flyer produced a sz 2.5 natural avalanche Mon pm.

Confidence

Problems

Storm Slabs

Storm Slab avalanches are the release of a cohesive layer (a slab) of new snow that breaks within new snow or on the old snow surface. Storm-slabs typically last between a few hours and few days (following snowfall). Storm-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.