Bollettino valanghe

Stevens Pass

Dec 10 – 11, 2018Northwest Avalanche Center
Vedi sulla mappa
Archiviato · scaduto 8 years ago

Pericolo valanghe

Wed
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato
Apri la mappa completa

In sintesi

Cautious route finding and conservative decision-making are essential. You can trigger avalanches due to significant new snow and wind. Avalanche danger will increase in the afternoon and will be most elevated at upper elevations. Watch for signs of dangerous conditions such as recent avalanches, collapsing, or cracks in the snow.

Problemi valanghivi

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1

    You can trigger avalanches where about 1 foot fresh snow accumulates. These avalanches will generally be soft and confined to steep slopes. At upper elevations and in wind-exposed terrain, you may find stiffer slabs that could break more widely. On low elevation, below treeline slopes you may encounter small wet avalanches. Use extra caution on slopes over 35 degrees and avoid deeper drifts of snow near and above treeline.

Discussion

Avalanche Discussion

Variable early season conditions exist. Avalanche Danger will change dramatically as you move through the mountains and as slabs build throughout the day. At lower elevations, well below treeline, shallow snow cover may make travel challenging, but may not pose significant hazard for avalanches. Near and above treeline natural and triggered avalanches are likely and could be big enough to kill you.

The main concern is avalanches due to new snow and wind. Underlying the new snow is a layer of weak facets and surface hoar. As new slabs build, it’s possible to trigger large and surprising avalanches. Watch for shooting cracks in the snow, collapses, or avalanches that break widely over terrain features. These are indicators that you should avoid avalanche terrain.

Snowpack Discussion

Regional Synopsis coming soon. 

Regioni coperte