Boletín de aludes

Northwest Coastal

Avalanche Canada
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Peligro de aludes

Tue
Wed
Alta montaña
3 · Notable
Límite del bosque
3 · Notable
Bajo el límite
2 · Moderado
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Desactualizado: este boletín caducó 4 months ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

Avalanche danger will increase through the day with warming and sun—plan your day accordingly.

Dry, wintery snow may persist at higher elevations, along with reactive wind slabs.

Problemas de aludes

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    1–2.5

    On north-facing and high-alpine slopes where dry, loose snow may persist, wind slabs remain possible.

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1.5–2.5

    Cornices will weaken with daytime warming and solar input.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–2

    Wet loose avalanches are most likely during periods of direct solar input and as temperatures rise later in the day.

Confidence

Moderate

  • We are uncertain about how the timing or intensity of solar radiation will affect the snowpack.
  • We are uncertain due to a limited number of field observations.

Avalanche Summary

Numerous loose wet avalanches (up to size 1.5) were reported across the region on Saturday. A few recent, large cornice failures were also observed in the Terrace area.

Check out these MIN reports from Saturday for more details:

Cornice abound and Zymbuck and Pollywood

Snowpack Summary

A widespread surface crust is likely to form overnight at treeline and above, except in high-alpine terrain (above ~2000 m), particularly on north aspects, where dry, wind-affected snow may persist.

Below treeline, limited overnight refreezing is likely to result in a moist or isothermal upper snowpack. With daytime warming and a chance of sun, the upper snowpack will weaken throughout the day.

Weather Summary

Sunday Night
Mostly cloudy. 30 km/h west ridgetop wind. Treeline temperature 1 °C. Freezing level 1500 m.

Monday
Mostly sunny. 40 km/h west ridgetop wind. Treeline temperature 1 °C. Freezing level 1500 m.

Tuesday
Mostly sunny. 30 km/h northwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1400 m.

Wednesday
Mostly sunny. 40 km/h northwest ridgetop wind. Treeline temperature -1 °C. Freezing level 1000 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avalanche danger will increase as the surface crust breaks down.
  • Think carefully about your exit plan from the backcountry because avalanche danger is expected to increase throughout the day.
  • Back off slopes as the surface becomes moist or wet with rising temperatures.
  • Be careful with wind-loaded pockets, especially near ridge crests and rollovers.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.

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