Boletín de aludes

Chilkat Pass

Haines Avalanche Center
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Peligro de aludes

Alta montaña
2 · Moderado
Límite del bosque
1 · Débil
Bajo el límite
1 · Débil
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Desactualizado: este boletín caducó 3 years ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

Pay attention to recent signs of wind loading, including visible blowing snow, and slopes steeper than 30 degrees that have been loaded with thicker deposits. These areas will look smooth and convex without a lot of texture, they may even be where the riding looks best, but are exactly where wind slabs are most likey to be triggered. Be cautious of rocks and shallow coverage, along with terrain traps that could increase the consequences of being caught in a slide.

Problemas de aludes

  • Wind Slabs

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

    On Nov. 28th south winds produced flagging off high peaks that have created a harder to trigger and more stubborn wind slab where deposits were drifted onto north aspects. Recent north winds are likely reverse loading south aspects with any soft snow available for wind transport. A widespread hard crust that formed last week when freezing levels rose to over 4,000' could increase the the potential slab size depending on the terrain. 

    Photo: Sawtooth Avalanche Center

Avalanche Discussion

Precipitation during early season storms produced a deeper snowpack at higher elevations above 4,500'; while lower elevations saw fluctuating temperatures with rain on snow and above freezing temperatures. On Nov 12th, widespread surface hoar was observed at the pass. These weak snow layers could still be burried within the snowpack, especially in wind protected terrain, and require careful evaluation on slopes greater than 30 degrees.  South winds picked up on Nov 29th with visible wind transport of snow observed at peaks and ridges. This built wind slabs on north aspects with a high degree of uncertainty for what sliding surfaces are underneath.  

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