Bollettino valanghe

Togwotee Pass

Bridger-Teton Avalanche Center
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Pericolo valanghe

Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
Senza grado
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Non aggiornato — questo bollettino è scaduto 13 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Conditions remain dangerous due to the size of the persistent slabs, their sensitivity to human triggers, their distribution with respect to aspect and elevation, and the variability in the weak layers beneath these slabs. Yesterday a snowmobiler was caught, completely buried and rescued without injury by a slab avalanche near Togwotee Pass. Snowmobilers in the Snake River Range also triggered large slab avalanches on steep west-facing slopes. Similar events are likely today. Although these dangerous slabs could be triggered in the early morning hours, they will be more sensitive to failure during the warmer portion of the day. Expert knowledge and patience are essential for safe travel in avalanche terrain today.

Problemi valanghivi

  • Persistent Slabs

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

    Large persistent slabs continue to be triggered on a variety of aspects, and are likely to be human triggered today. East and southeast aspects have continually been the most active. At the mid and upper elevations these slabs could have crown depths of three to five feet. Below an elevation of 7,500 feet these slabs could have crown depths of one to three feet. Previous tracks on a slope may not be an indication of stability. Today's sunshine and warm temperatures will increase the sensitivity of these slabs to human triggers. Persistent slabs warrant a patient approach to safely navigate potentially suspect terrain.

Avalanche Discussion

( Discussion is generated from the previous day's afternoon forecast. )High pressure will continue to dominate the weather with no precipitation expected through Monday. Sunday will be a repeat of today with clear skies and temperature inversions. Overnight lows will drop into the mid teens at 10,500 feet and to near zero in the valleys. Daytime highs will rise into the 20s and 30s. Winds will back towards the west at 10 to 20 miles per hour.Conditions remain dangerous due to the size of the persistent surface slabs and the widespread variability in the weak layers beneath these slabs. Large hard and soft slabs with crown depths of two to six feet could be human triggered on steep slopes. Although these dangerous slabs could be triggered by people during the early morning hours they are more likely to be triggered during the warmer portions of the day. Getting caught by one of these slabs could be fatal. Expert knowledge, restraint and conservative terrain choices are essential for safe travel in avalanche terrain.

Regioni coperte