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Avalanche Forecast

Archived

Dec 27th, 2017–Dec 28th, 2017

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.

A small dose of snow is welcomed over the next 48 hrs but the temperatures will seem pretty chilly without the sun. Stay warm!

Weather Forecast

Thursday will be cloudy with flurries yielding up to 5 cm, however alpine temperatures will remain low at around -22 °C to -18 °C. Friday will remain mainly cloudy with isolated flurries, alpine temperatures: -24 °C, High -19 °C. Temperatures will warm slowly through the weekend and winds will remain light westerly winds at ridge top until Sunday.

Snowpack Summary

Isolated pockets of wind slab will be found in exposed areas at upper elevations over an old snow interface of facets,  sun crust, wind effect, or surface hoar. 3 crusts extend into the lower limits of the alpine and are sitting dormant  in the snowpack, the Nov 24 crust seems to be providing mid-pack strength over a  lower, rotted, Halloween layer

Avalanche Summary

No new avalanches have been reported or observed along the parkway.Explosive control at the local hill on Christmas Eve produced a few small avalanches from isolated pockets of wind slab.

Confidence

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.