Boletín de aludes

Tetons

Bridger-Teton Avalanche Center
Ver en el mapa

Peligro de aludes

Alta montaña
3 · Notable
Límite del bosque
2 · Moderado
Bajo el límite
2 · Moderado
Open full map
Desactualizado: este boletín caducó 6 years ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

Strong southwesterly to northwesterly ridgetop winds impacted the region yesterday. These winds will continue to transport new and available snow throughout the day, and dangerous avalanche conditions will result above 9,000 feet. Yesterday, skiers and riders triggered several small slides in the mid and lower elevations. While skiers and riders could trigger similar slides on density breaks within the recent snowfall, the primary concern will be small to large persistent slab avalanches. Skiers and riders could easily trigger these slabs in steep terrain at all elevations, and the highest consequences will be on upper elevation slopes where these slabs are deepest. Cautious route finding and conservative terrain choices will be essential for safe travel in avalanche terrain.

Problemas de aludes

  • Persistent Slabs

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

    Following an extended dry period that ended on Friday, December 11th, the Tetons have received around three inches of snow water equivalent. The snowpack varies significantly beneath that snowfall. In the higher elevations, buried sun crusts and faceted snow provide sliding surfaces and weak layers, and backcountry travelers have the potential of triggering persistent slab avalanches up to 30 inches deep on steep, wind loaded slopes. In the lower elevations, where the recent snowfall resides above a shallow snowpack comprised of crusts, buried surface hoar and well developed facets down to the ground, human triggered slides around a foot deep will be likely in steep terrain that has not been heavily impacted by the sun.

Avalanche Discussion

Northwesterly flow aloft will bring another round of snowfall to the mountains tonight and through most of the day on Monday. Rain will be likely in the valleys. Overnight lows in the mountains will be in the mid-20s before rising into the mid-30s in the afternoon. Westerly ridgetop winds at 20 to 30 miles per hour will back to the southwest and decrease to 15 to 20 in the afternoon.Dangerous avalanche conditions will continue, and the general avalanche hazard is expected to remain Considerable in the Teton and Southwest Trails forecast zones. The hazard could increase to Considerable on Togwotee Pass. While skiers and riders could trigger slab avalanches on density breaks within the recent snowfall, the primary concern on Monday will be persistent slab avalanches. Skiers and riders could trigger these slabs to depths of two to three feet in steep, higher elevation terrain, and natural activity will be possible. Lower down, smaller persistent slabs could also be triggered. If significant valley rain occurs, both human triggered and natural avalanche activity will be likely.The Wyoming Department of Transportation will close Teton Pass at 3 AM Monday morning for avalanche mitigation. Beginning tonight at 10 PM, parking will be prohibited between mile post 7 and 17. Please plan accordingly.

Regiones cubiertas