Bulletin d’avalanche

Northwest Inland

Dec 27 – 28, 2017Avalanche Canada
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Archivé · expiré 9 years ago

Danger d’avalanche

Fri
Sat
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

No change expected with another cold dry week ahead. Dress warm and enjoy the sun!

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–2
    Lingering winds slabs may exist on a range of aspects in alpine terrain as winds shifted over the past week.

Confidence

High - The weather pattern is stable

Weather Forecast

THURSDAY: Mix of sun and cloud, moderate southeast winds, treeline temperatures around -18 C.FRIDAY: Mix of sun and cloud, moderate southeast winds, treeline temperatures around -18 C.SATURDAY: Sunny, light wind, treeline temperatures around -16 C.

Avalanche Summary

A few small natural wind slabs were reported last weekend in steep south facing terrain west of Smithers. Wind slabs showed some reactivity to human triggers a week ago, but cold temperatures have likely made them difficult to trigger.

Snowpack Summary

Surface snow has been affected by winds from a variety of directions. The degree of wind effect varies throughout the region, with the most dramatic winds associated with outflow conditions in western parts of the region near coastal inlets. Sheltered areas may still have 10-30 cm of powder from previous storms. A variable weak layer can be found roughly 20 cm below the surface, but in most places insufficient snow has fallen for it to be reactive. The layer comprises of crusts on solar aspects and feathery surface hoar in sheltered locations.The lower snowpack is generally well settled with two prominent crusts. The late November crust can be found 30-50 cm below the surface and the October crust is near the base of the snowpack.

Régions couvertes