Bulletin d’avalanche

Jasper

Jan 11 – 14, 2025Avalanche Canada
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Archivé · expiré 2 years ago

Danger d’avalanche

Mon
Tue
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Points saillants

Recent winds have come from a variety of directions.

Be on the lookout for wind slabs this weekend.

Problèmes avalancheux

  • Wind Slabs

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

    Recent winds have come from the Northwest, West and Southwest. Many features could have wind slabs.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    1–3

    A variety of crusts with facets above and below exist at the bottom of the snowpack. These layers are going to be with us for a long time and pose a low probability, high consequence situation if triggered.

Avalanche Summary

Natural windslabs avalanches have been observed around the icefields area to size 1 from east aspects in the alpine. Also, there have been several loose dry avalanches from steep rocky terrain across the region.

Confidence

Moderate

Snowpack Summary

5cm new snow at the icefields. Wind slabs have formed from moderate, gusting strong NW-W-SW winds. Currently, the snowpack is averaging 60-120cm in depth at the tree line. 10-30cm sits atop a weakening melt freeze crust and surface hoar layer from early December. The middle of the snowpack is facetted and there is a deep persistent layer at the base of the snowpack consisting of a decomposing melt freeze crust and depth hoar.

Weather Summary

Saturday

A mix of sun and cloud.

Precipitation: Nil.

Alpine temperature: High -9 °C.

Ridge wind northwest: 10-30 km/h.

Sunday

A mix of sun and cloud.

Precipitation: Nil.

Alpine temperature: Low -12 °C, High -8 °C.

Ridge wind northwest: 10 km/h.

Monday

Sunny with cloudy periods.

Precipitation: Nil.

Alpine temperature: Low -7 °C, High -1 °C.

Ridge wind northwest: 10-30 km/h.

Terrain and Travel Advice

  • Approach lee and cross-loaded slopes with caution.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.

Régions couvertes