Bollettino valanghe

Northwest Coastal

Dec 4 – 5, 2013Avalanche Canada
Vedi sulla mappa
Archiviato · scaduto 13 years ago

Pericolo valanghe

Fri
Sat
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Apri la mappa completa

In sintesi

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Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–4
    Outflow winds are reverse-loading and cross-loading exposed slopes. Fresh and touchy wind slabs are likely lurking below ridge crests and behind terrain features.

Confidence

Poor - Due to the number of field observations

Weather Forecast

Thursday: Mainly sunny. Treeline temperatures should hover between -5 and -10 and Alpine winds remain moderate to strong from the North. Friday and Saturday: Mainly sunny. Temperatures could drop slightly and northerly outflow winds continue.

Avalanche Summary

Recent observations near Shames include a few natural wind slab avalanche up to Size 3 in steep lee and cross-loaded terrain from northerly outflow winds.

Snowpack Summary

Around 40 cm of recent storm snow may still need some time to bond to the previous snow surface, especially where it sits on a crust. In the Shames area on Sunday a layer of preserved stellars were giving easy to moderate but sudden planar compression test results. Northerly outflow winds are forming fresh wind slabs in exposed lee terrain and scouring windward terrain. Below approximately 1000m surface hoar is growing on sheltered slopes, while surface snow on steep sun-exposed slopes is becoming moist with daytime warming. Average snowpack depths near treeline are around a metre with the bottom half being a crust.

Regioni coperte