Bulletin d’avalanche

Jasper

Mar 8 – 9, 2014Parks Canada
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Archivé · expiré 13 years ago

Danger d’avalanche

Sat
Mon
Alpin
4 · Fort
Limite forestière
3 · Marqué
Sous la limite
3 · Marqué
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Points saillants

Temperatures have spiked warmer and sooner than expected. This added to the new snow and increased wind has upped the avalanche danger at all elevations. Excellent skiing out there right now but choose terrain wisely.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3
    Open areas at tree line and above are beginning to show signs of wind effect and slab development.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2
    Sluffing out of steep terrain is a concern, particularly for ice climbers. Loose slides are overloading the snowpack in the alpine and have triggered slabs below.

Weather Forecast

More snow in the forecast, the bulk of new expected to begin Saturday night and through Sunday with moderate winds to transport it around. Mild temperatures are forecasted for the weekend.

Snowpack Summary

35cm of low density storm snow with as much as 20cm more forecast through the weekend. The new snow has buried previously reported wind slabs and in some areas has overloaded it and we are seeing increased natural activity, particularly in the alpine. Further load will only weaken the snowpack at all elevations.

Avalanche Summary

Several new natural avalanches observed in the Sir Winston Churchill range up to sz 3. They are isolated to cross-loaded gullies and wind-loaded open slopes in the alpine above 2400ms. The slabs appear to be triggered by loose slides from steeper terrain that is overloading the snowpack.

Confidence

Forecast snowfall amounts are uncertain

Régions couvertes