Bulletin d’avalanche

North Columbia

Nov 21 – 22, 2016Avalanche Canada
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Archivé · expiré 10 years ago

Danger d’avalanche

Tue
Wed
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
Sans niveau

Points saillants

Welcome to winter! It's that time of year when winter is slowly winding up and observations are limited. Due to limited data it is CRITICAL to supplement this information with your own observations. Please post your observations to the MIN.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Southwesterly winds have created fresh wind slabs on lee features below ridgetops in the alpine.
  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Recent storm snow is beginning to settle into a cohesive slab that is sitting on a hard crust. Shallow, rocky areas in the alpine are likely trigger spots.

Confidence

Low - Due to the number of field observations

Weather Forecast

Tuesday: Mix of sun and cloud, light to moderate southerly winds, freezing levels around 1300m. Wednesday: Mostly cloudy with flurries, light southerly winds, freezing levels around 1300m. Thursday: Mostly cloudy with possible flurries, light to moderate southerly winds, freezing levels around 1400m.

Avalanche Summary

No avalanches have been reported in this region.

Snowpack Summary

The depth of the snowpack varies greatly with elevation. Recent reports suggest the average depth is 150-200cm in the alpine, 100-170cm at treeline, and decreasing rapidly below treeline with many early season hazards such as rocks, stumps, and open creeks. Up to 70cm of recent storm snow is settling into a cohesive storm slab sitting on a hard crust. This crust is the primary layer of concern and may become increasingly reactive as the slab above stiffens. Southwesterly winds have also formed fresh windslabs on lee features below ridetops. Below the crust is moist snow to the ground that is beginning to dry out on northerly aspects in the alpine. Although conditions have been reported as being quite good, remember that an early season snowpack is an inherently weak snowpack and requires thorough investigation before stepping out into bigger terrain.

Régions couvertes