Bollettino valanghe

Northwest Coastal

Nov 28 – 29, 2015Avalanche Canada
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Archiviato · scaduto 11 years ago

Pericolo valanghe

Mon
Tue
Alta quota
Senza grado
Limite del bosco
Senza grado
Sotto il limite
Senza grado
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
    1–3
    Wind slabs may be lurking near, or well below, ridge crests. Conditions are highly variable, so be alert to hollow, drummy sounds and changes in the feel of the snow as you travel.

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–3
    Unusually warm alpine temperatures may weaken surface snow and lead to loose wet avalanches.

Confidence

Fair - Due to the number of field observations

Weather Forecast

High pressure, dry conditions and warm alpine temperatures are expected to continue until Monday. Winds become strong southerly on Sunday. Light snow is expected to begin late Monday (around 5-10 cm overnight) and continue on Tuesday (10-25 cm). The northernmost part of the region will get the most snow and may exceed these numbers. Confidence in the intensity and timing of this system is low.For more details check out avalanche.ca/weather

Avalanche Summary

A natural avalanche cycle occurred in the north of the region on Thursday, with several loose, moist avalanches below about 1700 m, and some isolated storm or wind slabs in the alpine to size 2.5. Glide avalanches are also reportedly active. On Friday, a large explosive triggered a size 3 slab which may have failed on an early season crust/ facet layer.

Snowpack Summary

So far, we only have limited information from the field. Initial reports suggest that there is around 150 cm at 2000 m. Recent winds have created variable wind slabs and crusts. In some places, a crust/facet interface or surface hoar can be found in the upper snowpack. At high elevations, a crust which formed early season sits at the base of the snowpack.Its a good time to dig down and get snowpack information before committing to any terrain. Incoming snow may bond poorly to some of the existing snow surfaces.

Regioni coperte