Bulletin d’avalanche

Banff Yoho Kootenay

Feb 18 – 19, 2015Parks Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

Wed
Thu
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

The natural cycle is tapering, but human triggering is still possible.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2
    Winds from both the SW and NW have formed fresh wind slabs in open areas above tree line. These are settling out but can still be triggered and may step down to the basal weak layers.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    2–3
    The base of the snowpack remains weak due to the presence of basal depth hoar and facets. Natural activity is tapering off, however human triggering is still likely on this layer.

Weather Forecast

Clear skies on Wednesday will be followed by a weak system on thursday which will produce very light precipitation. Wind will remain light from the West. These inputs will produce little change in the danger rating.

Snowpack Summary

Some wind effect in open areas above tree line. Temperature crust present below 1800m. 60-70cm of well settled snow from recent storms and warm temperatures sits over weak facets and depth hoar at the bottom of the snowpack.

Avalanche Summary

No new avalanches were observed or reported today. However, forecasters conducted a fracture line profile at the avalanche that occurred on Sunday that was posted to our facebook page. Here is the link to see this profile.

Confidence

Régions couvertes