Bulletin d’avalanche

Jasper

Feb 6 – 7, 2015Parks Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

Fri
Sat
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

It's going to be Heads up Hockey out there on the Jan ice layer. Snow fall amounts may be in excess of 20cms for friday morning with more expected thought the weekend! 

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    Intense loading continues with a new input of snow on lee and cross loaded features at all elevations.

  • Storm Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–2
    The Jan 30th interface has proven reactive with light inputs of new snow. This new storm will only continue to overload that layer. Also, treat recently re-loaded bed surfaces with caution as this layer will not go away easily.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    This layer remains a concern in isolated areas above treeline and may be triggered by large loads such as cornices, surface slides or from shallow areas by skiers. The entire snowpack throughout the forecast region is sitting on 20cm of depth hoar.

Weather Forecast

All the weather models are in agreement (a rare occurrence in itself) and so far, precip models are proving correct. It's snowing out my window as I write. If this pattern of weather truths continues we should find up to 20cms of new snow on the ground Friday morning and much more to come. Keep your eye on the forecast through the weekend.

Snowpack Summary

With the first input of new snow we likely will find areas of new buried surface hoar. That is sitting on a further 15cm over the Jan rain crust found on all aspects up to 2100m. Wind slabs forming on lee aspects, cross loaded features and open areas.

Avalanche Summary

Road patrols reporting poor visibility and no new avalanches observed.

Confidence

Régions couvertes