Bulletin d’avalanche

Cariboos

Dec 25 – 26, 2011Avalanche Canada
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Archivé · expiré 15 years ago

Danger d’avalanche

Tue
Wed
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
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Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–4
    Wind slabs exist on lee and cross-loaded features and are expected to build further over the next few days.

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–4
    A cohesive slab overlies the early December buried surface hoar/facet interface. Activity on this layer has slowed, but it could reawaken with new snow loading.

Weather Forecast

Monday: Light snow. Freezing level near valley bottom. Moderate southerly winds. Tuesday:5-10cm snow. Freezing level near 1000m, rising late in the day. Strong westerly winds. Wednesday: 15-20cm with the freezing level rising to 1800m. Strong westerly winds.

Avalanche Summary

No new avalanches have been reported.

Confidence

Fair - Intensity of incoming weather is uncertain

Snowpack Summary

The recent storm snow seems to be settling and strengthening. Any loose available snow continues to be redistributed by southwest winds. Wind slabs with the potential to propagate widely exist in the alpine, particularly on north through east aspects. At treeline and below, pockets of wind slab also exist in open areas. A surface hoar/facet/crust interface is buried anywhere from 30- 80cm deep. Avalanche activity on this layer has slowed, but it remains a concern as snow-loading gradually builds this week. Sudden ('pops') type results were observed on this layer earlier in the week.A sun crust is also buried in the alpine on some steep south and west aspects. The mid-pack is generally strong and well settled.

Régions couvertes