Bulletin d’avalanche

Jasper

Jan 5 – 6, 2017Parks Canada
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Archivé · expiré 10 years ago

Danger d’avalanche

Thu
Fri
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3
    Cold temperatures and hard slab conditions make triggering less likely. Triggering from shallow spots remains a possibility.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Arctic temperatures faceting the surface snow causing it to lose cohesion and release loose dry avalanches in steep alpine rocky terrain. Particularly concerning for ice-climbers in confined terrain.

Weather Forecast

In the next 48hrs winds will decrease to light at treeline and shift from the north to the W and SW. Highs on thursday of -12 and light ppt producing up to 7cm of snow. Temperatures will remain much the same into Saturday when another cooling trend will set in.

Snowpack Summary

After two significant cold spells and below average snowfall the snowpack is weak, shallow and has several layers of concern. The snowpack base is rapidly turning the depth hoar above which is a significant rain crust now buried up to a meter below the surface. The upper snowpack is stratified with wind slabs the bonding between which is suspect.

Avalanche Summary

No new avalanches have been observed or reported in the past 24 hours .

Confidence

Due to the number of field observations

Régions couvertes