Bollettino valanghe

Togwotee Pass

Bridger-Teton Avalanche Center
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Pericolo valanghe

Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
Senza grado
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Non aggiornato — questo bollettino è scaduto 5 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

The wet snow avalanche hazard will start at Low this morning and increase in the afternoon as temperatures in the mountains rise above freezing. Although this morning above 9,500 feet, the dry snow avalanche hazard is Moderate, and it will be possible for a person to trigger a slab avalanche on buried persistent weak layers. Warming temperature and strong solar radiation will make it possible to likely that backcountry travelers could trigger wet loose and wet slab avalanches on steep avalanche terrain. Wet slides could also occur naturally on steep slopes in direct sunlight. While these slides may start small, a foot or less in-depth, the debris could become entraining and destructive. Careful evaluation of the snowpack and avoiding avalanche-prone slopes and terrain traps as snow surfaces become damp to wet will be essential for safe travel in the backcountry today.

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2

    At the upper elevations, where snow surfaces have remained dry, skiers and riders could trigger hard slab avalanche one to two feet deep on buried near surface facets and surface hoar. Hard slabs over persistent weak layers could break high into low-angle terrain and are typically triggered once the person is on the slab. Previous tracks are NOT a sign of stability and careful snowpack evaluation is essential for assessing this problem. In some areas, the warming temperatures and direct sunlight will cause these slabs to become more sensitive to triggers throughout the day.

Avalanche Discussion

( Discussion is generated from the previous day's afternoon forecast. )Clear skies will continue into tomorrow. Overnight temperatures are expected to drop into the low teens and then warm above freezing at 10,000 feet by tomorrow afternoon. Winds will back from the west to the southwest by morning and are expected to be 5 to 15 miles per hour. In all the forecast areas, except above 9,000 feet at Togwotee Pass, the avalanche hazard will be Low in the morning, and then, the wet snow hazard will increase to Moderate in the afternoon. In the morning, skiers and riders could encounter small isolated pockets of dry snow slabs at the upper elevations on steep wind-loaded terrain features. As surface crusts melt and dry snow becomes wet, it will be possible for a person to trigger a wet snow avalanche on steep avalanche terrain. Wet loose slides could also occur naturally on steep solar aspects in direct sunlight. These slides will likely be small but could have dangerous outcomes if triggered above terrain traps, cliffs, or on sustained steep slopes.On Togwotee Pass above 9,000 feet, the avalanche hazard will start at Moderate. There, it is possible for a person to trigger a slab avalanche one to two feet deep on buried persistent weak layers. On solar aspects, this dry snow avalanche hazard could increase as the day warms. Previous tracks are not a sign of stability, and backcountry travelers should evaluate the snowpack before committing to avalanche terrain.

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