Bulletin d’avalanche

Jasper

Dec 16 – 17, 2014Parks Canada
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Archivé · expiré 12 years ago

Danger d’avalanche

Tue
Wed
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
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Points saillants

Good quality skiing reported in the forecast area! Get at it before the wind does!Remember, triggering is possible so continue to choose carefully!

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2
    Approach loaded, cross-loaded and re-loaded lee features with caution.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–3
    These deep persistent slabs at tree line and sheltered sub-alpine slopes may be triggered from shallow areas within the snowpack.

Weather Forecast

The daily diurnal cycle of temperature fluctuations resembles a heart rate monitor (-15 overnight to -3 in the day and back again) and will continue for the next couple of days until we get into a more steady seasonally cold trend. Potentially a bit more precip and moderate wind as we lead into the weekend. Let's hope for an early Christmas dump!

Snowpack Summary

Very nice tightening up of the snow pack! Hard and Moderate low quality shears within the mid-pack are helping forecasters blood pressure drop back to normal levels. Isolated wind slabs still exist in open areas at tree line and alpine elevations. The deeper instabilities are the most susceptible to human triggering from shallow areas.

Avalanche Summary

Natural activity has slowed down but there is plenty of evidence of large deep slides in wind loaded features that have released in the last cycle.

Confidence

Due to the quality of field observations

Régions couvertes