Boletín de aludes

Central Cascades

Central Oregon Avalanche Center
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Peligro de aludes

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

Lo esencial

On Monday it will be possible to trigger a Wind Slab avalanche on north and east slopes where the wind has blown the new snow.  Be wary of steep, convex slopes below ridgelines and behind crossloaded features.

Problemas de aludes

  • Wind Slabs

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

    A Wind Slab avalanche was observed on Sunday near treeline on a northeast facing slope.  New snow and windy conditions mean that Wind Slab avalanches will continue to be possible on Monday.  Wind Slabs are created when the wind blows snow onto lee (north and east in this case) slopes where it can be deeper and harder than the snow beneath.  They are most common in open terrain and particularly near and above treeline where the wind can move snow more freely.  However, Strong wind speeds can often load snow further downslope.  Signs of wind loaded snow include: harder snow surfaces, deeper snow, and features like wind lips or smooth pillowy textures.  Cracking in wind deposited snow, and pole probing that reveals weaker snow beneath  are indications of a Wind Slab avalanche character.  Often on these breezy days the best riding is found in the trees and sheltered glades where the new snow remains unconsolidated.

Avalanche Discussion

The new storm snow has provided a welcome refresh to our snow surfaces.  As of Sunday evening, it appears we've received 12-15 cm. of new storm snow in the most sheltered terrain.  Below treeline and in sheltered terrain the new snow appears to be bonding well to the old snow surfaces.  Near treeline a size 1 Wind Slab avalanche was observed on Sunday afternoon.

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