Boletín de aludes

South Rockies

Mar 23 – 24, 2026Avalanche Canada
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Archivado · caducó 6 months ago

Peligro de aludes

Wed
Thu
Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil
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Lo esencial

Danger increases with elevation.

Expect fresh & reactive wind slabs to form over the day. Concern also remains for persistent slabs at high elevations that were spared from the rain.

Problemas de aludes

  • Wind Slabs

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

    Newly formed wind slabs exist on wind-loaded alpine and treeline features.

  • Persistent Slabs

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

    Persistent weak layers may linger in the upper snowpack. Triggering may be possible in areas without a thick/supportive crust, most likely at upper treeline and alpine elevations. Cornice falls are most likely to trigger this problem.

Confidence

Moderate

  • We are uncertain due to how buried persistent weak layers will react with the forecast weather.

Avalanche Summary

No new avalanches were reported on Sunday. Last week's rain and warm temperatures produced a widespread wet avalanche cycle. Moving forward, we expect reactivity to rider triggers in wind-loaded terrain features. The persistent slab problem remains a concern at higher elevations.

If you are heading into the backcountry, please consider sharing conditions via the MIN.

Snowpack Summary

By Tuesday afternoon, up to 10 cm of new snow may have fallen, adding to recent accumulations of up to 30 cm. Available snow will be redistributed into deeper deposits on north and east facing slopes. New snow sits over a melt-freeze crust to 2100 m in the north, rising to the mountain top in the south, which will likely bond poorly.

Below this, 30 to 50 cm of moist snow sits above a crust (1 to 10 cm thick). Various persistent weak layers may still exist in the top 120 cm of the snowpack - these remain a concern in high alpine features where a supportive surface crust does not exist.

In shallow snowpack areas, depth hoar (large facets) can be found near the bottom of the snowpack.

Weather Summary

Monday Night
Mostly clear skies. 40 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 2000 m.

Tuesday
Mostly cloudy. 10 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -4 °C. Freezing level rise to 1700 m.

Wednesday
Mostly cloudy. 5 to 10 cm of snow. 50 km/h southwest ridgetop wind. Treeline temperature -3 °C. Freezing level 1800 m.

Thursday
Mix of sun and clouds. 4 to 10 cm of snow. 30 km/h west ridgetop wind. Treeline temperature -9 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Avalanche activity is unlikely when a thick melt-freeze crust is present on the snow surface.
  • Watch for newly formed and reactive wind slabs as you transition into wind-affected terrain.
  • Pay attention to cornices and give them a wide berth when traveling on or below ridges.

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