Bollettino valanghe

Jasper

Mar 26 – 27, 2017Parks Canada
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Archiviato · scaduto 10 years ago

Pericolo valanghe

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

In sintesi

Meow is not the time to be bold. Excellent creamy riding can be found on most moderate and low angle terrain.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–3
    Windslabs building at treeline and above on lee aspects and while thin on Sunday afternoon, it is sensitive to triggering.

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–3
    Large cornices on ridge top lee features. Recent cornice failure has triggered large avalanches from alpine terrain.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    2–4
    The deep persistent slab can be triggered by travelers from shallow or weak locations or naturally from large loads such as cornice failure or windslab avalanches. On Mar 25, skiers triggered a sz 3 on this layer.

Weather Forecast

Cloudy with sunny periods and isolated flurries on Monday. Moderate SW ridge top winds. Remaining relatively cool with forecasted alpine temperatures, -3 to -10.

Snowpack Summary

The main concern in the snowpack at tree-line and above is the deep persistent slab over weak facet layer at ground. This slab can be triggered by travelers from shallow or weak locations or naturally from large loads such as cornice failure or windslab avalanches. All steep loaded slopes that have not recently avalanched should be avoided.

Avalanche Summary

A size 3 skier accidental slab avalanche was reported Saturday afternoon north of the Icefields on a NE aspect at tree-line. Cycle continues, especially in the Alpine where new wind load is triggering deep slabs and cornice triggered slabs on North through West aspects, up to size 3 observed in field work today.

Confidence

Due to the number and quality of field observations

Regioni coperte