Bollettino valanghe

Tetons

Bridger-Teton Avalanche Center
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Pericolo valanghe

Alta quota
4 · Forte
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato
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Non aggiornato — questo bollettino è scaduto 10 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Dangerous avalanche conditions exist. Warm temperatures, dense new snow, areas of rain and strong winds have combined to create unstable conditions. During the past several days multiple skiers and riders have been caught and carried by avalanches in the steep terrain. Yesterday a guided skier was caught and injured south of the boundary of the Jackson Hole Mountain Resort. Today's avalanches are expected to be larger with greater consequences for those who get caught. At the mid and upper elevations dense slab avalanches are likely to be easily triggered by humans and could release naturally. Wet slides are possible at the lower elevations. Travel in avalanche terrain is not recommended during periods of high hazard.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    2

    Dense surface slabs formed by southwest winds are likely to be easily triggered by skiers who venture into steep avalanche prone terrain and could release naturally. These slabs could fail with crown depths to four feet on hard crusts, buried surface hoar, graupel snow and/or density differences within the new snow. These dense slabs could run long distances and entrain wet snow into the debris at the lower elevations.

  • Loose Wet

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

    Wet snow avalanches are possible in steep terrain at the lower elevations. These dangerous slides could be human triggered on steep slopes or be initiated by slides that descend in the lower elevations from higher elevation avalanche starting zones.

Avalanche Discussion

A cold front will move through the area early this evening. This front is expected to bring another three to six inches of new snow to the mountains and one to three inches of snow to the valleys. Temperatures are forecast to be in the mid-teens at 10,500 feet by tomorrow morning and into the lower 20s in the valleys by daybreak. Daytime highs will remain in the 20s in the mountains and rise to near 30 degrees in the valleys. Winds will slowly decrease overnight and are expected to be westerly at 25 with gusts to 40 miles per hour in the morning and continue to slowly decrease during the day.The general avalanche hazard is expected to be CONSIDERABLE to MODERATE depending on elevation and location. New soft slabs and older, dense slabs could be human triggered in steep avalanche starting zones. These slabs are generally expected to be one to two feet deep but could be up to four feet deep in some areas. Cooler temperatures are expected to decrease the potential for wet slide activity. The sensitivity of surface slabs to human triggers and the potential for wet slides to be a hazard will be dependent upon the amount of cooling that occurs and the amount of lighter density new snow that falls overnight.

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