Bulletin d’avalanche

Jasper

Jan 18 – 19, 2024Avalanche Canada
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Archivé · expiré 3 years ago

Danger d’avalanche

Sat
Sun
Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Points saillants

Northerly winds are transporting snow around in the north part of the Jasper region. This combined with the new snow is likely creating wind slabs on non-typical south facing aspects.

Problèmes avalancheux

  • Wind Slabs

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

    The winds have switch to the north again. Watch for isolated reverse loaded wind slabs on south facing aspects.

  • Loose Dry

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

    A handful of loose dry avalanches have occurred recently with one scrubbing to ground. They are currently limited to specific terrain such as very steep alpine rocky terrain yet enough of a concern if a person is standing below it or gets swept away.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2.5

    You must keep this basal layer on your radar as triggering is possible in isolated features, such as steep rocky terrain where you find yourself standing on the surface and not wallowing in facets, that's the problem slab.

Confidence

Moderate

Avalanche Summary

Loose dry avalanches up to size 2 in very steep rocky alpine terrain were noted over the past few days. Some are scrubbing to ground. They do not appear to be initiating any deeper weakness' in the snowpack.

Snowpack Summary

About 10cm of snow fell on Tuesday. Tree line snowpack depth is an average of 45-75cm. The snowpack is weak and largely unsupportive.

Weather Summary

Thursday

A mix of sun and cloud.

Precipitation: Nil.

Alpine temperature: High -14 °C.

Light ridge wind.

Friday

A mix of sun and cloud with isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -14 °C, High -9 °C.

Ridge wind southwest: 10 km/h.

The Mountain Weather Forecast is available at Avalanche Canada https://avalanche.ca/weather/forecast

Terrain and Travel Advice

  • Loose avalanches may start small but they can grow and push you into dangerous terrain.
  • Be carefull around freshly wind loaded features.

Régions couvertes