Avalanche Forecast

Issued: Dec 27th, 2017 4:00PM

The alpine rating is low, the treeline rating is low, and the below treeline rating is low. Known problems include Wind Slabs.

Tim Haggarty, Parks Canada

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!

Summary

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

Isolated pockets persist by are becoming less and less reactive with ongoing cold temps.

Watch for surface cracking and stiffer surface layers of snow.Use caution above ledges and cliffs where small avalanches may have severe consequences.

Aspects: North, North East, East, South East, South.

Elevations: Alpine.

Likelihood

Unlikely - Possible

Expected Size

1 - 1

Valid until: Dec 28th, 2017 4:00PM