Bollettino valanghe

Tetons

Bridger-Teton Avalanche Center
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Pericolo valanghe

Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
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Non aggiornato — questo bollettino è scaduto 13 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

The potential for humans to trigger dangerous slab avalanches exists at the mid and upper elevations. These slabs are most likely to be found in exposed avalanche terrain where wind loading occured during the recent storm. These slabs could be triggeredby the weight of a single person and are likely to be more sensitive to larger triggeres, like snowmobiles. If triggered on a northerly aspect above 9,000 feet these slabs could step down to the ground. Human involvement with one of these slabs avalanches is likely to result in serious injury or death.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2–3

    Dense surface slabs with depths of two to four feet lie upon slick snow surfaces and faceted snow. These slabs will be most sensitive to larger loads such as snow machines but could still release due to the weight of a skier or snowboarder when a weak spot is impacted. These slabs are most likely to be found in exposed avalanche terrain where wind loading occurred during the recent storm.

  • Deep Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    3

    On northerly aspects above an elevation of 9,000 feet weak faceted snow persists at the base of the snowpack. Dangerous hard slabs up to five feet in depth could fail on this weak layer. The failure of these pesistent deep slabs could be triggered by the weight of a single person however, they are more likely to fail under the weight of a larger trigger such as a snowmobile or due to the release of a wind slab that steps down to this layer at the ground.

Avalanche Discussion

A cold northwest flow with limited moisture will bring areas of light snow to the mountains during the next 24 hours. Accumulations of a trace to a couple inches are possible. On Monday skies will be mostly cloudy with a chance for some light snowfall. Temperatures will remain below zero. Winds will back towards the west at 10 to 20 miles per hour. The general avalanche hazard is expected to be MODERATE at the mid and upper elevations (7,500 to 10,500 feet) and be LOW below an elevation of 7,500 feet. Human triggered slab avalanches are possible in exposed avalanche terrain where wind loading occurred during the last storm. These slabs could be up to three feet in depth and could step down to the ground on steep northerly aspects above an elevation of 9,000 feet. Larger triggers such as snowmobiles are more likely to trigger one of these dangerous slabs and previous tracks should not be interpreted as a sign of stability.

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