Boletín de aludes

Salmon River Mountains

Payette Avalanche Center
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Peligro de aludes

Thu
Alta montaña
2 · Moderado
Límite del bosque
2 · Moderado
Bajo el límite
1 · Débil
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Desactualizado: este boletín caducó 6 months ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

It is possible to trigger a persistent slab avalanche 2-3 feet deep on protected and or shaded slopes facing east through northwest, above 6500'. Approach these slopes with caution and adhere to good travel protocols, such as traveling one at a time after evaluating the snowpack. Small dry-loose avalanches or snow sluffs are also possible in steep or extreme terrain and could push you into terrain traps such as cliffs and gullies.

Problemas de aludes

  • Persistent Slabs

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

    Prior to entering terrain steeper than 30 degrees, evaluate the snowpack for weak layers of facets and surface hoar that may be buried at the new/old snow interface 2-3 feet down from the surface.

    The most sensitive slopes may be at mid elevations near  water like creeks, and lakes where surface hoar was buried and areas remained cold during the inversions that heated the upper elevations to the upper 40's.

     

     

    (2/10/2026)

    Snowmobile, Intentionally triggered slab avalanche that failed on well preserved surface hoar that was buried 2/8 now about 2 feet deep.

    Photo: George Halcom

Avalanche Discussion

 The last storm cycle deposited 2-3 feet of snow, ending colder and lighter than it started. Rain fell, potentially to as high as 7,500' as the storm started warming. The new snow fell on a variety of surfaces that were dry for almost a month. Winds formed slabs at ridgetops, and loose dry snow is now abundant. Wind activity has calmed down. Temps are on the rise, and settlement in the snowpack is rapidly bringing down the wind slab and dry loose avalanche potential; however, the chance remains that you could kick loose a wind slab or a dry loose avalanche on east through northwest aspects that are steeper than 35 degrees. Most slopes the dry loose or wind slabs should remain small yet in exposed terrain with cliffs and other traps like gullies or depressions the consequences could be bad.

Bonding of the new snow was good on the West and South slopes, but observations on shaded northerly aspects revealed persistent weak layers of near-surface facets and buried surface hoar. These weak layers are variable in sensitivity and distribution, but both have the potential to propagate and persist, producing avalanches up to 3 feet deep.

Keep your eyes on your partners and stay spread out on and near slopes steeper than 30 degrees, especially in shaded, protected, mid-elevation terrain near creeks or lakes.

Go to our observations page to submit an observation, and check out recent observations like this one from Payette Powder Guides.

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