Bulletin d’avalanche

Jasper

Mar 20 – 21, 2024Avalanche Canada
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Archivé · expiré 3 years ago

Danger d’avalanche

Fri
Sat
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

The new snow seems to bonding well but the deep persistent and persistent problems still exist. Use caution in terrain that hasn't already avalanched.

Problèmes avalancheux

  • Persistent Slabs

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

    This problem layer is the crust and facets created by early February's warm spell. It is down 30-90 cm in the snowpack and is a 1-10 cm thick crust or multiple crusts with a layer of weak facets above.

  • Loose Dry

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

    Loose dry avalanches likely won't be much of a hazard unless they push you into or off a terrain trap.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1.5–3.5

    Basal depth hoar makes up the bottom of the snowpack. This is a low probability but high consequence problem. Stay away from weak, rocky, shallow location where triggering this layer is more likely.

Confidence

Moderate

Avalanche Summary

No avalanches were observed along the Icefields Parkway or Maligne Lake Road on Wednesday but visibility was poor.

Snowpack Summary

About 10cm of new snow fell onto a 2-5cm melt freeze crust on Wednesday. The Feb 3rd crust interface is down 35-60cm. Basal depth hoar makes up the bottom third of the snowpack. HS ranges from 50 to 150cm.

Weather Summary

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

Thursday

Mainly cloudy with isolated flurries.

Precipitation: Trace.

Alpine temperature: High -6 °C.

Ridge wind northeast: 10 km/h.

Friday

Mainly cloudy with isolated flurries.

Precipitation: Trace.

Alpine temperature: Low -15 °C, High -9 °C.

Ridge wind east: 10 km/h.

Terrain and Travel Advice

  • Closely monitor how the new snow is bonding to the old surface.
  • Even a small avalanche can be harmful if it pushes you into an obstacle or a terrain trap.

Régions couvertes