Bulletin d’avalanche

Northwest Inland

Mar 25 – 26, 2012Avalanche Canada
Voir sur la carte
Archivé · expiré 15 years ago

Danger d’avalanche

Tue
Wed
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
Ouvrir la carte complète

Problèmes avalancheux

  • Cornices

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–6
    Large cornices exist in alpine terrain. A failure could be destructive by itself, and could also trigger an avalanche on the slope below. Cornices are most likely to destabilize under strong solar radiation.

  • Loose Wet

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–3
    Loose wet avalanches are likely in steep south-facing terrain if the sun is shining.

Confidence

Fair - Due to variable snowpack conditions

Weather Forecast

Monday: a mix of sun and cloud - light southerly winds - freezing level at 1100m Tuesday: trace amounts of snowfall - light southeast winds - freezing level at 1100m Wednesday: light snowfall - light southeast winds - freezing level at 1100m

Avalanche Summary

A few radiation induced moist sluffs were observed on steep, rocky terrain. No other avalanches were reported from the region.

Snowpack Summary

Moderate southerly winds have shifted recent storm snow into wind slabs in lee and cross-loaded terrain; however, reports indicate that the slab is settling well in some areas with no significant shears. Sun exposed slopes are now into a melt freeze cycle with southerly slopes becoming moist under sunny skies. The mid February persistent weak layer, comprised of spotty surface hoar, facets and crusts, is buried 80-120 cm below the surface. No recent activity has been reported on this interface, although I feel that triggering may be possible in steep, isolated terrain in some parts of the region. Below this the snowpack is well settled and strong. Cornices in the area are reported to be very large and primed for natural collapse or triggering by a person.

Régions couvertes