Bollettino valanghe

Banff Yoho Kootenay

Jan 15 – 16, 2018Parks Canada
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Archiviato · scaduto 9 years ago

Pericolo valanghe

Tue
Wed
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

This is a good time to be conservative in your terrain choices and minimize exposure to avalanche terrain. The chances of human triggered avalanches will increase as temperatures rise.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2
    Wind slabs have formed in the alpine and near ridge crests at treeline. Watch for the changing feel of the snow under your feet and be wary of areas with denser surface snow over weaker snow.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–3
    This layer continues to linger in forecasters minds. Easy test results and report of significant whumps and cracks show the potential for this to be a dangerous problem. Be very careful with this layer and travel conservatively.

Snowpack Summary

Warm alpine temperatures and clear skies moistening the upper snowpack on steep S-W aspects. There is 30-50 cm over the Dec.15 persistent weak layer of facets and surface hoar. This Dec 15th layer is becoming reactive to skiers at treeline and above and producing easy to moderate snowpack test results. Below this is a heavily faceted snowpack.

Avalanche Summary

The Dec 15 interface continues to show signs of reactivity, reports throughout the forecast region note significant whumphs and cracking from skier traffic at treeline and above. Avalanche activity from this problem was observed along the sunshine road releasing a size 2 slab.

Confidence

Weather Forecast

A temperature inversion will continue through the forecast region, with alpine temperatures above freezing through Monday into Tuesday. Skies will remain relatively clear and winds in the light to moderate range. Expect unusually strong solar outputs for this time of the year on South and West aspects Monday and Tuesday afternoon.

Regioni coperte