Boletín de aludes

Microwave-Sinclair

Apr 16 – 17, 2025Avalanche Canada
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Peligro de aludes

Fri
Sat
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
2 · Moderado
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Lo esencial

Dangerous avalanche conditions are expected.

Large persistent slabs may occur with warm temperatures.

Problemas de aludes

  • Cornices

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

    Cornices may fail during warm temperatures. Potentially triggering a slab on the slope below.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible
    Tamaño
    2–3

    Triggering may still be possible where there is no crust on high alpine slopes. Consider if the risk is worth the reward, it's difficult to predict where and when this problem will be reactive.

  • Loose Wet

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Possible - Likely
    Tamaño
    1–1.5

    Small wet loose avalanches may occur if its calm and sunny. Avoid overhead avalanche terrain.

Confidence

Low

Avalanche Summary

A large avalanche was reported in the Evelyn area on a northeast aspect on Saturday. Check out the details in this MIN.

Snowpack tests continue to show reactivity on buried weak layers, but it's getting hard to pinpoint where they are a problem.

Read a great report from the field team here.

Snowpack Summary

10 to 15 cm of recent snow covers variably wind-affected snow in open terrain at upper elevations. A crust is found up to 2000 m and higher on solar slopes.

Below treeline, depending on overnight refreeze, a surface crust is likely over a wet and unconsolidated snowpack.

Two layers currently exist in the mid-snowpack.

  • A layer of surface hoar that formed in early March can be found at a depth of 40 to 70 cm.

  • A layer of facets, surface hoar, and/or a crust from mid-February is buried 60 to 120 cm deep.

Weather Summary

Wednesday Night

Clear skies. 10 to 20 km/h northwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1500 m.

Thursday

Sunny. 20 to 30 km/h northwest ridgetop wind. Treeline temperature +5 °C. Freezing level rising to 3200 m.

Friday

Mostly cloudy with up to 5 cm of snow. 40 to 60 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 2800 m in the morning, falling to 1500 m by the end of day.

Saturday

Mix of sun and cloud with 1 to 2 cm of snow. 15 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1300 m.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Be aware of the potential for large avalanches due to buried weak layers.
  • Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.
  • Small avalanches can have serious consequences in extreme terrain. Carefully evaluate your line for slabs before you commit to it.

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