Bollettino valanghe

Kootenay Boundary

Dec 21, 2016Avalanche Canada
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Archiviato · scaduto 10 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

The wind is forecast to be strong Tuesday night into Wednesday. Plenty of new snow to redistribute into new wind slabs at tree line and alpine elevations

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible - Likely
    Dimensione
    1–3
    New snow combined with moderate to strong southwest winds have created slabs in the lee of terrain features

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2
    20-40 cm of new snow sits on top of a variety of potential weak sliding surfaces

Confidence

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

Weather Forecast

Wednesday: Isolated flurries / Moderate southwest wind / Alpine temperature -7Thursday: Scattered Flurries, accumulation 5cm / Moderate southwest wind / Alpine temperature -6 Friday: Flurries, accumulation 5-10cm / Light to moderate south wind / Alpine temperature -6

Avalanche Summary

Recent reports indicate avalanche activity from explosives control running on the storm snow old snow interface to size 2 at treeline and above. These are reported as both storm slab and wind slab avalanches.

Snowpack Summary

20-40 cm of new snow has buried previously formed windslabs, facets and surface hoar. Moderate to strong winds have loaded leeward features with new touchy wind slabs. A widespread crust that was buried in November is typically down 80-100cm. Recent tests show variable results with this persistent weakness. Some show results as hard and resistant and other show it may have the propensity to propagate large avalanches if triggered from thin rocky areas.

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