Bulletin d’avalanche

Waterton Lakes

Avalanche Canada
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Danger d’avalanche

Fri
Sat
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Périmé — ce bulletin a expiré 5 months ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

New snow continues into the weekend, and winds are forecasted to increase.

Wind slabs will continue to form throughout the stormy days ahead. Use caution in wind loaded features as rider triggered wind slabs are likely.

Problèmes avalancheux

  • Wind Slabs

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

    New snow and wind will form fresh wind slabs in lee features.

  • Loose Dry

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

    Anticipated in extreme terrain and steep headwall features.

Confidence

Moderate

  • We are uncertain due to the timing, track, and intensity of the incoming weather system.

Avalanche Summary

Earlier this week, several size 1 dry loose avalanches were observed in steep, sheltered alpine features. As well, a few wind slab avalanches to size 2 were observed in treeline and below treeline features.

Snowpack Summary

Up to 55cm of new snow is being redistributed into wind slabs in lee features. This sits over variable surfaces in the alpine and a new 3-8cm thick crust treeline and below treeline. Beneath this, 30–50 cm of settled snow overlies crusts and facets which is moist at lower below treeline elevations. The lower snowpack is generally well settled.

Weather Summary

Thursday

Flurries. Up to 9 cm of snow. Low of -5 °C. High of 0 °C. Wind gusting to 100 km/h. Freezing level at 2100 metres.

Friday

Isolated flurries. Low of -7 °C. High of -3 °C. Wind gusting to 60 km/h. Freezing level at 1400 metres.

Saturday

Periods of snow with totaling 15 cm. Low of -15 °C. High of -3 °C. Winds gusting to 60 km/h. Freezing level at valley bottom.

Current weather forecast: Mountain Weather Forecast

Terrain and Travel Advice

  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Loose avalanches may start small, but they can grow and push you into dangerous terrain.

Régions couvertes