Boletín de aludes

Togwotee Pass

Bridger-Teton Avalanche Center
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Peligro de aludes

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

Lo esencial

An overall weak snowpack has been loaded with recent snow and wind making human triggered avalanches possible across all elevations and aspects. Identify wind loaded terrain where avalanches will be more likely and larger in size. Look for signs of wind loaded terrain such as large pillows and drifts with rippled or cracking snow surfaces.

 

Problemas de aludes

  • Wind Slabs

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

    Periods of strong, sustained wind over the last 48 hours have formed stiff slabs up to 2.5’ deep on leeward and cross-loaded terrain. These wind slabs are sitting above persistent weak layers of facets that could break above you and travel far across the slope. Larger avalanches will be possible the higher you travel in elevation. Pay attention to the subtle clues of snow texture and hardness to identify wind loaded slopes and steer clear.

  • Persistent Slabs

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

    The bottom half of the snowpack contains weak faceted snow where triggering 1-2’ soft slabs is possible. These weak layers are persistent meaning that you can continue to trigger avalanches on steep terrain even without any additional snowfall. This problem is widespread across all aspects in the middle-upper elevations and most dangerous on wind loaded terrain as mentioned above. Evaluate the terrain carefully as even small avalanches can have serious consequences above terrain traps such as gullies, creeks, and trees.

     

     

    (12/17/2024)

    Persistent slab avalanche on very steep slopes running into a creek terrain trap. 

    Photo: Alex Drinkard

Avalanche Discussion

Over the last week Togwotee has received up to 14” of snow with over 1” of snow water equivalent. Wind intensity peaked after the snowfall, sustaining  20-40 mph with gusts to 70 mph out of the west/southwest. Prior to this storm, the bottom half of the snowpack had developed into weak, sugary facets during a period of dry weather in early December. The combination of recent snow and wind above these weak layers has caused numerous avalanches. Over time, the number of avalanches have decreased, but the consequences remain the same. Slopes that were rapidly loaded by wind are the main concern today. Seek out terrain sheltered from the wind to avoid this problem. Watch out for very steep or convex slopes where triggering avalanches are possible even in sheltered terrain. Be aware that the snowpack is still thin and obstacles are lying just below the snow surfaces. It’s a long season ahead, caution is advised with thin snow coverage.

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