Bollettino valanghe

Togwotee Pass

Bridger-Teton Avalanche Center
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Pericolo valanghe

Tue
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 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Large human-triggered, wet snow avalanches are possible as snow warms in the heat of the day. Evaluate snow and weather conditions carefully for signs of rapid warming. Mushy, wet snow that you can sink up to your boot tops is a warning sign that the snow is unstable.

Natural and human-triggered wet slab avalanches two to four feet thick have occurred over the past three days, all of them have been large enough to easily bury a person.

Problemi valanghivi

  • Wet Slabs

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

    Below-freezing temperatures overnight created a thin crust over yesterday's mushy, soft snow.  This crust will melt quickly in the sun and send more water into the snowpack, reducing snow stability as it does. 

    • Wet loose sluffing in steep terrain is likely to occur and may entrain significant amounts of snow. This will most likely be a human-triggered problem today. Continue to carefully choose your timing and be aware of changing snow conditions depending on aspect, elevation and other terrain factors. Small pockets of wet loose snow can trigger a much larger and more dangerous slab.
    • Wet slab avalanches are dangerous. Dense debris on steep slopes can move fast if given the right bed surface.  Water melting into the snowpack breaks down bonds and creates an upside down snowpack. Wet slab debris is heavy and destructive. The best way to avoid these wet avalanche types is to  stay off of and out from under steep slopes that are cooking in the sun or turning to wet slush.

    (3/20/2026)

    A rider triggered and was critically buried by this wet slab avalanche near Spread Creek on Friday, March 20. His hand was showing and his friends dug him out.

  • Persistent Slabs

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

    The chances of triggering an avalanche failing on buried weak snow is unlikely, but can’t be ruled out just yet. Very steep, sheltered areas that face north above 9,000 feet is where you could encounter this problem. Slopes won’t give any warning that they are unstable, so carefully assess terrain where this problem lies and only expose one person at a time to suspect slopes.

Avalanche Discussion

After a brief and nominal cooling spell, temperatures will continue to climb through the week and create the potential for larger avalanches. Cooling overnight has so far kept avalanches to D2-2.5 or smaller but we may be on the cusp of these growing larger depending primarily on overnight temperatures, thickness and timing of cloud cover. If you are looking to recreate in the mountains today you'll want to keep a close eye on cloud cover. Cloud cover today may slow further warming of an already warm snowpack. 

There is a degree of uncertainty in the forecast due to the variability of cloud cover. Thicker clouds will provide shade and slow dangerous melting.  Thin cirrus clouds will help heat all aspects, but to a lesser degree than direct sunshine. 

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