Bulletin d’avalanche

Jasper

Feb 21 – 22, 2025Avalanche Canada
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Archivé · expiré 2 years ago

Danger d’avalanche

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

Ice climbers watch for overhead hazard with the warm temperatures,especially if the sun is out.

Problèmes avalancheux

  • Wind Slabs

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

    These windslabs may be sitting on top of facets or the January 30th crust.

  • Loose Dry

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

    Watch for loose avalanches with the warm temperatures and if the sun is out.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3

    Large depth hoar 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.

Confidence

High

Avalanche Summary

A few small loose point release avalanches observed on a field day around Parker Ridge.

Snowpack Summary

Warm temperatures are making the surface snow moist below 1900m and on south facing terrain. The Icefields has wind effect even into treeline while the Bald hills have had noticeably less. In sheltered areas there is roughly 15cm of snow overlying the January 30th layer which is a temperature crust or wind slab depending on the area. The midpack is weak and faceted. The bottom of the snowpack is comprised of large depth hoar.

Weather Summary

Friday

Mainly cloudy with scattered flurries.

Accumulation: 4 cm.

Alpine temperature: High -5 °C.

Ridge wind southwest: 20 km/h gusting to 50 km/h.

Freezing level: 1500m

Saturday

Periods of snow.

Accumulation: 14 cm.

Alpine temperature: Low -8 °C, High -5 °C.

Ridge wind southwest: 20 km/h gusting to 50 km/h.

Freezing level: 1600m

Terrain and Travel Advice

  • Be careful as you transition into wind-affected terrain.
  • If triggered, wind slabs avalanches may step down to deeper layers resulting in larger avalanches.
  • Loose avalanches may start small, but they can grow and push you into dangerous terrain.

Régions couvertes