Bollettino valanghe

Jasper

Jan 5 – 6, 2014Parks Canada
Vedi sulla mappa
Archiviato · scaduto 13 years ago

Pericolo valanghe

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

In sintesi

Moderate to strong winds are starting to redistribute the recent storm snow into sheltered areas which could in turn over load the basal weak layer.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    2–3
    Wind slab layers at the top of the snowpack can be triggered and may step down to the deeper instability at the bottom of the snow pack.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    2–4
    Triggering this layer from a shallow area is possible and would have high consequences in terrain features of any size.

Weather Forecast

Very cold temperatures tonight will be followed by a return to milder temps next week. Moderate to strong ridge top winds will lead to a redistribution of the recent storm snow onto sheltered aspects.

Snowpack Summary

Up to 30cm of new storm snow overlies existing wind slabs which in places has a very weak faceted basal layer. Below tree line the snow pack has very little support except in isolated open areas where wind slabs may exist.

Avalanche Summary

Road patrols in the South end of the forecast area observed one size 3 slab that failed on the basal facets and a size 2.5 storm slab at TL. Numerous smaller slabs from cross loaded features and sloughing was also observed.

Confidence

Regioni coperte