Bollettino valanghe

Banff Yoho Kootenay

Jan 28 – 29, 2012Parks Canada
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Archiviato · scaduto 15 years ago

Pericolo valanghe

Sat
Sun
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato

In sintesi

Sat. afternoon into Sunday, expect 30-40cm W. of the divide, and 20-25cm E. of the divide, with strong SW winds and 1600m freezing levels. We expect a natural cycle starting Sat. evening, but hazard may rise to high as soon as the storm arrives.SH

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–3
    At treeline 40-50 cm of settled storm snow sits overtop of the Jan 20 facet interface. Avy control in Yoho produced avalanches to sz.3 on this layer today. Expect this to become more touchy as snow load increases.
  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely - Possible
    Dimensione
    2–3
    In most parts of the forecast area a settled midpack overlies a weaker facetted base. This has been less reactive of late, but thin areas E. of the divide will be most susceptible to triggering. Likelihood will increase this weekend.
  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2
    Expect 10-15 cm over the day Saturday, with intensity picking up in the afternoon. Watch locally for timing of this snow. Loading will increase sensitivity to triggering wind slabs, and intense sloughing will occur in steeper terrain.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Due to the quality of field observations on Friday

Regioni coperte