Bulletin d’avalanche

Jasper

Jan 11 – 12, 2022
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Archivé · expiré 5 years ago

Danger d’avalanche

Wed
Thu
Alpin
3 · Marqué
Limite forestière
2 · Modéré
Sous la limite
2 · Modéré
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Points saillants

Caution is strongly advised while the snowpack adjusts to the changing temperatures.

Road and avalanche control closures imminent with forecasted new snow, Wednesday through Friday.

Check AB 511 for up to date info.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2.5

    Steady and gusting SW wind continue to develop new slabs on lee aspects particularly the North aspects.

  • Persistent Slabs

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

    This layer is a rain crust up to 1950m and reactive. Typically this layer is down around 40cm.

  • Deep Persistent Slabs

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

    Notable activity in the region. Triggers include cornice failures, explosives, or a skier's weight in a very shallow snowpack spot.

Confidence

Forecast snowfall amounts are uncertain on Wednesday

Weather Forecast

Tuesday: Flurries, 8 cm. Temp: High -6 °C. SW: 20-40 km/h.

Wednesday: Snow, heavy at times. Accumulation: 29 cm Temp: Low -6 °C, High -2 °C. SW: 20-40 km/h. FZL: 1900 m

Thursday: Flurries. Accumulation: 11 cm. Alpine temperature: Low -10 °C, High -2 °C. Ridge wind west: 15 km/h gusting to 45 km/h. Freezing level: 1800 m

Snowpack Summary

Significant changes happening in the forecast region. New input of snow, wind or sun are having a dramatic effect to the hazard depending on asp, elevation and geographic location. Surface instabilites, like new snow, wind-pressed, transported or temp related will trigger and entrain facets, likely other deep instabilities. Strong caution advised. 

Avalanche Summary

Forecasting teams observing numerous natural events, up to sz 2 in both the Maligne range and Icefields Parkway.

Régions couvertes