Bulletin d’avalanche

Waterton Lakes

Avalanche Canada
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Danger d’avalanche

Tue
Wed
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Périmé — ce bulletin a expiré 6 months ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

UPDATE: 40 cm of snow has fallen across the park and has increased avalanche danger ratings.

Snow continues to fall. Newly formed wind slabs will be the primary concern with the forecasted stormy days ahead. Use caution in wind loaded features.

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

    Numerous dry loose avalanches were observed Monday morning after the new snow.

Confidence

Moderate

  • We are uncertain due to a limited number of field observations.

Avalanche Summary

Numerous size 1 dry loose avalanches were observed in steep features, and a few windslab avalanches to size 2 were observed Monday morning.

Snowpack Summary

40 cm of new snow is being redistributed into wind slabs in lee features. This sits over older wind slab in the alpine and over a new crust treeline and below treeline. Beneath this, 30–50 cm of settled snow overlies crusts and facets which is all moist treeline and below treeline. This moist snow is starting to refreeze due to colder temperatures. The lower snowpack is generally well settled.

Weather Summary

Monday

Isolated flurries up to 5 cm. High of -8 °C. Low of -11. Wind gusting to 50 km/hr

Tuesday

Scattered flurries up to 4 cm. High of -10 °C. Low of -13 °C. Wind gusting to 40 km/h.

Wednesday

Flurries, up to 11 cm. High of -4 °C. Low of -11 °C. Wind gusting to 65 km/h. Freezing level at 1400 m.

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 step down to deeper layers, resulting in larger avalanches.

Régions couvertes