Bulletin d’avalanche

Glacier

Avalanche Canada
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Danger d’avalanche

Fri
Sat
Alpin
2 · Modéré
Limite forestière
2 · Modéré
Sous la limite
1 · Faible
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Périmé — ce bulletin a expiré 4 months ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Recent storms have created a reactive storm slab, this problem is most sensitive in lee features.

The sun will pack a punch the next few days, avoid overhead exposure to solar slopes.

Problèmes avalancheux

  • Loose Wet

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

    Strong solar warming will destabilize the upper snowpack. Avoid exposure to solar slopes when the sun is strong.

  • Storm Slabs

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

    New snow and strong gusty winds will create a fresh storm slab problem. This is expected to be most reactive to human triggering in lee features. We may see natural avalanches from steep terrain, especially during times of intense solar radiation.

Confidence

Moderate

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

Avalanche Summary

In the Connaught valley Frequent Flyer & N Cheops 4 both avalanched naturally on Wednesday. Frequent flyer was a loose wet avalanche and was triggered by strong solar. N Cheops 4 was a slab avalanche that started at the top and ran onto the runout or fan.

Over the previous weekend several wet loose avalanches up to size 2.5 and a size 3 glide slab release were observed through the highway corridor.

Snowpack Summary

20 to 40cms of new snow sits on top of a variety of old spring-like surfaces. Anything from crusts to moist or wet snow depending on time of day, aspect and elevation.

A thick rain crust from the March atmospheric river sits 20-50cm below the surface.

Below treeline the surface varies from isothermal sticky snow to refrozen tree bombs and huge debris fields from the massive avalanche cycle in March.

Weather Summary

Generally clearing weather as the Low pressure system moves out of the region.

Tonight Flurries, Snow: 6cm. Alpine low -13°C. Wind NE-25 Km/h. Freezing level(FZL) Valley Bottom

Thurs A mix of sun and cloud. Alpine high -4°C. Wind 20km/h gusting 40. FZL 1800m

Fri A mix of sun and cloud. Alpine high -5°C. Wind: West 15-25km/h. FZL 1800m

Sat A mix of sun and cloud. Snow 0 cms. Alp High -1°C. Wind: 20km/h. FZL 2100m

Terrain and Travel Advice

  • Avoid steep, sun-exposed slopes when the air temperature is warm or when solar radiation is strong.
  • A moist or wet snow surface, pinwheeling, and natural avalanches are all indicators of a weakening snowpack.
  • Avoid travelling on slopes below cornices.

Régions couvertes