Boletín de aludes

Presidential Range

Mount Washington Avalanche Center
Ver en el mapa

Peligro de aludes

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

Lo esencial

You could trigger a large avalanche in wind-drifted snow on east and southeast facing terrain at middle elevations. While conditions are becoming more stable, deeper snow and areas of smooth, bright white, pillow-shaped snow may harbor this lingering avalanche problem. Travel on wind textured firm snow surfaces to avoid these areas of potentially unstable snow.

Problemas de aludes

  • Wind Slabs

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

    Old wind slabs at middle elevations are becoming increasingly stable and are unlikely to trigger. These slabs are generally small in size in most areas. On the western half of the compass, evidence of this avalanche problem may be hard to find. The greatest concern for today is the large areas of drifted snow found primarily on east and southeast aspects. The traverse on Summer Lion Head trail is an example of an east facing slope harboring an old but large wind slab. While these slabs are continuing to gain strength, recent observations suggest that lingering instabilities persist.

    To identify the avalanche problem, look for pillowy, smooth snow in east and southeast-facing terrain. Test the sensitivity by digging down to the interface of the old snow and consider potential consequences, as many of these sheltered pillowy snow drifts are harbored above exposed rocks and trees.

    Summer Lion Head Traverse 2/23/24

Avalanche Discussion

After three days of warm temperatures, falling temperatures today will likely further increase stability, especially on south aspects. A question remains: will this temperature drop today be enough to stabilize weak layers in the deeper slabs found on east and southeast aspects? Investigate before committing. 

Warming followed by cooling also brings slick icy surfaces to the forefront. Help keep yourself safe on icy steep surfaces by using crampons and an ice axe.

Regiones cubiertas