Bollettino valanghe

Northwest Coastal

Feb 5, 2019Avalanche Canada
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Archiviato · scaduto 8 years ago

Pericolo valanghe

Wed
Thu
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole

In sintesi

Strong outflow winds have created wind slabs in exposed terrain.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2
    Strong to extreme northeast winds have redistributed the recent storm snow and created wind slabs in exposed terrain, particularly in cross-loaded and lee terrain features near ridges.

Avalanche Summary

Wind slabs were reactive to skier traffic on the weekend, generally producing small avalanches. See here for an example.

Confidence

High - The weather pattern is stable

Weather Forecast

TUESDAY: Mostly clear skies, light north wind, alpine temperature -10 C.WEDNESDAY: Mostly cloudy with light snowfall, light west wind, alpine temperature -8 C.THURSDAY: Mix of sun and cloud with isolated flurries, moderate northwest wind, alpine temperature -9 C.

Snowpack Summary

Strong northeast winds have redistributed up to 40 cm of recent storm snow, creating wind slabs in lee and cross-loaded terrain features. This snow overlies wind-affected surfaces in the high alpine and a thick melt-freeze crust at and below treeline.In the south of the region, the remainder of the snowpack is well-settled.Around Bear Pass and in the north of the region, there is a weak layer of feathery surface hoar crystals about 50 cm deep. This weak layer is likely most prominent in sheltered and shaded areas. Also in the north, a few weak layers may still exist within the middle and lower half of the snowpack. These include another layer of surface hoar around 70 to 100 cm deep and a weak layer of sugary faceted snow around 200 cm deep.

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