Bulletin d’avalanche

Jasper

Apr 15 – 16, 2012Parks Canada
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Archivé · expiré 14 years ago

Danger d’avalanche

Tue
Wed
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

A strong melt freeze crust exists in the morning below treeline which will begin to break down by mid-day. Expect winter conditions at treeline and above.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–3
    On Saturday, size 2 slab avalanches were observed on north aspects below corniced ridge lines. Variable winds have created thin slabs on most aspects. No avalanche activity was observed on Sunday however slab bonding has not been tested.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2
    Cold overnight temperatures have formed a supportive melt freeze crust in most locations. Direct sun, warm temperatures and rain will quickly weaken this crust, dramatically increasing the avalanche potential. Pay attention to warming conditions.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–4
    Recent size 2 slab avalanches have been observed on this layer on NE aspects. These slides were initiated by small loose snow avalanches. These deeper layers can wake up unexpectedly on all aspects.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing or intensity of solar radiation is uncertain on Monday

Régions couvertes