Bollettino valanghe

Kananaskis

Dec 9 – 10, 2014Alberta Parks
Vedi sulla mappa
Archiviato · scaduto 12 years ago

Pericolo valanghe

Thu
Fri
Alta quota
4 · Forte
Limite del bosco
4 · Forte
Sotto il limite
3 · Marcato
Apri la mappa completa

In sintesi

A warm, wet and windy impulse of weather will lead to an increase in danger levels. Avoid all avalanche terrain during times of rain and/or rapid loading by wind and snow.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–4
    Wind slabs remain dominant in Alpine terrain. These slabs could step down to the November rain crust.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2
    Rain at lower elevations is making the snowpack very weak and ripe for loose wet slides.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    2–4
    Slabs are sitting on a weak basal combination of facets overtop of the November rain crust. Wide propagations and more sensitive triggering are now possible due to the recent increase in slab density.

Confidence

Fair - Timing, track, or intensity of incoming weather system is uncertain

Weather Forecast

Warm, wet and windy for the next couple of days. Freezing levels are expected near 2200m for both Wednesday and Thursday with winds reaching up to 125km/h from the SW. Precipitation is expected to be light, but will fall as rain at mid to lower elevations.

Avalanche Summary

Isolated snowballing and very small loose wet avalanches were observed today at lower elevations.

Snowpack Summary

Light rain fell through the day to an elevation of at least 2300m. The extent of the rain soaked snow is unknown at this time. Blowing snow was observed at ridge top due to extreme SW winds. Settlement of the upper and mid snowpack has caused an increase in the potential for human-triggering due to more dense slab properties above the weak basal layers. The November rain crust is the main culprit here and will remain a serious concern for sometime to come.

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