Bulletin d’avalanche

Jasper

Mar 27 – 28, 2021
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Archivé · expiré 6 years ago

Danger d’avalanche

Mon
Tue
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Points saillants

The Icefields Parkway is anticipated to be closed Sunday afternoon-evening in the Parkers Ridge Area. Check 511 Alberta.

Be aware that significant snowfall, winds and warm temperatures may wake up deep buried weak layers resulting in large avalanches.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2

    Recently formed wind slabs can be found in lee features near ridge crests, and in cross-loaded gullies.

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible - Likely
    Taille
    1–1.5

    30 cm of snow is forecasted in the next 24h. Use caution in exposed or confined features where small avalanches can have high consequences.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1.5–3

    Forecasted new snowfall, warm temperatures and moderate to strong winds may be the triggers that wake up this layer.

Weather Forecast

30cm of snow is forecasted for the next 24h with moderate to strong S-SW winds, and freezing levels at 1500m. A mix of sun and cloud, cooler temperatures with freezing levels at valley bottom and light to moderate ridge top winds are expected on Monday.

Snowpack Summary

Up to 30cm of new snow with convective flurries and moderate W-SW winds have redistributed the low density, new snow over previous surfaces such as hard windslab and variable crusts at TL/ALP elevations. The snow pack varies throughout the region from strong supportive snow in deeper areas to weak facetted snow in the shallow areas.

Avalanche Summary

1 size 2 slab avalanche was observed from steep alpine terrain on a NE asp.

Confidence

Intensity of incoming weather systems is uncertain

Régions couvertes