Bollettino valanghe

Banff Yoho Kootenay

Nov 20 – 21, 2011Parks Canada
Vedi sulla mappa
Archiviato · scaduto 15 years ago

Pericolo valanghe

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

In sintesi

Another cold day ahead, followed by a warming trend and little to no snow in the immediate forecast.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–3
    All slopes that look inviting for skiing have a wind slab over depth hoar layering. Cracking, whumphing, natural and skier triggered avalanches have been observed. This layer collapses with Easy results. Pick lower angled low consequence terrain.

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2–3
    Several, 2 day old, downed avalanches observed on the Hwy 93 N failed in the midpack (photos on the ACMG mountain conditions report), beneath cliffs or on convex rolls. We are uncertain of the failing layer, but it could be preserved surface hoar.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–3
    Steep open slopes at and above treeline have a soft to hard wind slab that is sensitive to human triggering near the ground on the basal depth hoar. Wind loading triggered Na avalanches up to size 2.5 that failed to ground in the last 48 hrs.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Regioni coperte