Bulletin d’avalanche

Jasper

Jan 17 – 18, 2026Avalanche Canada
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Archivé · expiré 8 months ago

Danger d’avalanche

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

Saturday will be sunny and warm, with temperatures rising into the alpine.

If the snow starts to feel soft and the air feels warm, be cautious of recently formed wind slabs and steep sunny slopes.

Problèmes avalancheux

  • Wind Slabs

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

    Previous strong winds from the SW, and now strong winds from the NW continue to build wind slabs at tree line and above. Even though natural activity is tapering there is still potential to trigger lingering windslabs.

  • Loose Wet

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

    Freezing levels rise again on Saturday - avoid being on or below steep terrain that is in the sun.

  • Deep Persistent Slabs

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

    Be cautious where the snowpack transitions from thick areas to thin areas. Recent avalanches up to size 3.5 have been observed on this layer. This problem encompasses multiple weak layers of facets, crusts, and basal facets from November and December.

Terrain and Travel Advice

  • Avoid steep, sun-exposed slopes when the air temperature is warm or when solar radiation is strong.
  • Keep in mind that human triggering may persist as natural avalanches taper off.
  • Be mindful that deep instabilities are still present and have produced recent large avalanches.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.

Confidence

Moderate

  • Uncertainty is due to difficult to forecast freezing levels.

Avalanche Summary

On Wednesday several loose wet avalanches were observed up to size 2, most occurring on steep sun exposed slopes.

Wind slabs and loose wet avalanches up to size 2 were produced from avalanche control along the Icefields Parkway on Tuesday.

A size 3.5 deep persistent slab triggered by a large cornice failure was observed on Saturday in the icefields area, and a size 2 deep persistent slab was observed from the ski hill in the adjacent backcountry on Tuesday.

Snowpack Summary

Strong winds from changing directions (southwest to north west) have created wind slabs at tree line & above and even into exposed below treeline features. Fluctuating freezing levels have formed moist snow/melt freeze crusts below 2000m and up to ridge top on solar aspects. The basal facet deep persistent problem remains a concern, particularly in thin snowpack areas, or under large triggers like cornice falls.

Weather Summary

Saturday

Sunny. Alpine temperature: High 0 °C. Ridge wind light to 20 km/h. Freezing level: 2500 metres.

Sunday

Sunny with cloudy periods. Alpine temperature: Low -11 °C, High -6 °C. Ridge wind light to 25 km/h. Freezing level at valley bottom.

Monday

Sunny with cloudy periods. Alpine temperature: Low -9 °C, High -6 °C. Light ridge wind. Freezing level at valley bottom. Alpine temperature inversion.

Régions couvertes