Bollettino valanghe

Banff Yoho Kootenay

Mar 18 – 19, 2013Parks Canada
Vedi sulla mappa
Archiviato · scaduto 14 years ago

Pericolo valanghe

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

In sintesi

Touchy conditions will be exacerbated tomorrow with solar effect. Don't let the blue skies lure you out of a conservative mindset.

Problemi valanghivi

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    2–3
    The cornices are very large and touchy with recent high humidity and winds. Avoid lee slopes beneath them.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–3
    In shallower areas east of the divide deep slabs have been observed failing on the lower facetted snowpack

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–3
    Storm snow accumulations since last Tuesday have been 60-80 cm or more. Both northerly and westerly winds with the storms have created storm slabs on most aspects. Touchy conditions and potential for large avalanches persist.

Weather Forecast

A short lived ridge Tuesday will be followed by another fairly strong system Wednesday bringing more snow and wind and warming temps.

Snowpack Summary

Another 10 cm of new and some more strong winds has added again to the storm slab condition. Winds from both the west and north east have loaded most open slopes at and above treeline. In shallower areas east of the divide, the snow rests on a very weak base of facets. South aspects have a crust. Triggering is likely.

Avalanche Summary

Widespread avalanche activity has been observed throughout the forecast district. Deep slabs have been observed in many areas to size three. Large cornice falls, storm slabs and deep slabs are still a concern.

Confidence

Intensity of incoming weather systems is uncertain on Wednesday

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