Bulletin d’avalanche

Northwest Coastal

Jan 12 – 13, 2015Avalanche Canada
Voir sur la carte
Archivé · expiré 12 years ago

Danger d’avalanche

Wed
Thu
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
1 · Faible
Ouvrir la carte complète

Points saillants

The December week may still be reactive to moderate loads. Continue to make conservative choices as the new snow with wind comes into the region.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3
    Moderate to strong S-SW winds will build windslabs in lee features, especially N and NE facing terrain.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–5
    A small avalanche or cornice failure could produce enough force to trigger this buried weak layer.

Confidence

Good - Intensity of incoming weather systems is uncertain

Weather Forecast

A weak upper level trough will arrive on the coast on Monday bringing flurries to the region. As the trough moves inland on Tuesday, the North coast may see up to 25 cm of snow at higher elevations, and the possibility of rain up to 1500m. Winds will be light to moderate from the south throughout the forecast period. Wednesday will see a bit of clearing before the next pulse of moisture arrives later in the day. Freezing levels around 500m until Wednesday, when they will spike to 2000m before coming back down on Thursday.

Avalanche Summary

No avalanches reported yesterday.

Snowpack Summary

Strong winds have redistributed the recent storm snow, and rain in some areas has produced a surface crust layer that will be of concern with future snow loading. A buried surface hoar layer in the mid-snowpack is still on the radar in some northern sections , and the mid December crust can still be found in the middle of the snowpack. This layer has been reported to be sandwiched between facets and surface hoar in some places. The November crust near the bottom of the snowpack is generally well bonded but may still be reactive in areas with shallow snowpack.

Régions couvertes