Bulletin d’avalanche

Jasper

Feb 3 – 4, 2026Avalanche Canada
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Archivé · expiré 8 months ago

Danger d’avalanche

Thu
Fri
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible

Points saillants

Rising freezing levels may be problematic for ice climbs in direct sun or with a lingering snowpack overhead. Wind slabs are developing above treeline, with most new precip and transport observed in the Icefields.

Problèmes avalancheux

  • Wind Slabs

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

    New wind slabs are forming from recent snow and SW winds. These will be found in lee features and sit above a weak layer of facets or surface hoar.

  • Deep Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely - Possible
    Taille
    2–3.5

    This problem is low probability but high consequence as it would be releasing near the ground thus with a lot of destructive volume. Be extra cautious where snowpack goes from thick to thin areas.

Confidence

Moderate

  • We are uncertain due to rapidly changing freezing levels.

Avalanche Summary

No new avalanches observed or reported in the region.

Snowpack Summary

High freezing levels throughout the region support the development of a new surface crust, especially below treeline (up to 2200m). A weak layer of surface hoar and facets is down ~10cm, which is most problematic in areas with wind loading.

In open areas, recent winds have redistributed the new snow into windslabs. The midpack is still supportive, but a weaker, faceted layer lingers above the ground, creating a deep, persistent slab.

Weather Summary

Overnight: Clear with cloudy periods. Low -6 °C. Mostly light ridge wind, gusting to 30 km/h.

Tuesday: A mix of sun and cloud. High -2 °C. Ridge wind light to 15 km/h. Freezing level: 2100 m.

Wednesday: A mix of sun and cloud. Low -4 °C, High -1 °C. Ridge wind light to 20 km/h. Freezing level: 2900 m

Thursday: Sunny. Low -2 °C, High 0 °C. Ridge wind light to 15 km/h. Freezing level: 2700 m

Terrain and Travel Advice

  • Make observations and continually assess conditions as you travel.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.

Régions couvertes