Boletín de aludes

Northwest Coastal

Mar 26 – 27, 2026Avalanche Canada
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Archivado · caducó 6 months ago

Peligro de aludes

Sat
Sun
Alta montaña
2 · Moderado
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil
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Lo esencial

Avoid steep, rocky, and wind-affected areas where triggering slabs is more likely.

Very large human-triggered avalanches are possible.

Problemas de aludes

  • Wind Slabs

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

    Recent winds have varied in direction, so be cautious of wind-loaded pockets on all aspects.

  • Cornices

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    1.5–3

    Cornices are large, looming, and may trigger large persistent slabs on slopes below.

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Unlikely - Possible
    Tamaño
    2–3.5

    Persistent weak layers of crusts/facets or surface hoar in the top 200 cm of the snowpack may be possible to trigger.

    This is a low-probability, high-consequence problem.

Confidence

Low

  • We are uncertain about alpine conditions due to limited field observations.
  • We are confident that there are persistent slabs in the snowpack, but uncertain about how likely they are to trigger.

Avalanche Summary

Over this week, a few natural, cornice-triggered, and skier-triggered wind slabs up to size 2 were reported. A few natural cornice failures occurred, but did not pull slabs on the slopes below.

In the neighbouring region, a fatal avalanche accident occurred north of Terrace on March 22. Available details can be found here.

Observations in this region are limited, and there's uncertainty about buried weak layers in the mid snowpack. Choose conservative terrain.

Snowpack Summary

Cornices are large and looming. Avoid travelling underneath them.

Last week's 20 to 50 cm of storm snow has been redistributed by strong southwest shifting to northeast winds, creating wind slabs on a variety of aspects. This sits on a variety of old surfaces, including surface hoar, facets, crusts, and/or wind-scoured snow.

There are multiple persistent weak layers consisting of crust/facets or surface hoar in the top 200 cm of the snowpack. We have limited information on the distribution and reactivity of these layers.

Weather Summary

Thursday Night

Mostly cloudy. 2 cm of snow. 30 km/h southeast ridgetop wind. Treeline temperature -11 °C.

Friday

Mix of sun and clouds. 1 cm of snow. 10 km/h south ridgetop wind. Treeline temperature -10 °C.

Saturday

Mostly cloudy. 3 to 4 cm of snow. 20 km/h southwest ridgetop wind. Treeline temperature -9 °C.

Sunday

Mostly cloudy. 2 to 5 cm of snow. 10 km/h southwest ridgetop wind. Treeline temperature -9 °C.

More details can be found in the Mountain Weather Forecast.

Terrain and Travel Advice

  • Stay off recently wind loaded slopes until they have had a chance to stabilize.
  • Cornice failures could trigger large and destructive avalanches.
  • Be aware of the potential for large avalanches due to buried weak layers.

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