Bulletin d’avalanche

Jasper

Jan 4 – 5, 2018Parks Canada
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Archivé · expiré 9 years ago

Danger d’avalanche

Fri
Sat
Alpin
1 · Faible
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Enjoy the mild temps and keep your fingers crossed for 10cm on the weekend!

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Be aware of steep gully features that may be loaded enough to release a small slab.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Expect point release sluffing from steep terrain, particularly mid-afternoon.

Weather Forecast

Stable mild temperatures, freezing levels remaining below 1500m, pressure dropping towards the weekend, bringing moderate SW winds and light snowfall up to 10cm.

Snowpack Summary

Cold temps have facetted the upper snowpack. Isolated pockets of wind slab in ALP areas sitting on an old snow interface of facets, sun crust, wind effect, or surface hoar. 2 buried crusts extend into the lower limits of the alpine, both are dormant. The upper crust is providing mid-pack strength, but has facets above and below it.

Avalanche Summary

Isolated small loose snow avalanches occurred in steep alpine terrain with today's warming temps. 2 X size 2 naturally triggered slab avalanches observed in the Columbia Icefield Area on steep, cross-loaded gully features on solar aspects in the alpine.

Confidence

Due to the quality of field observations

Régions couvertes