Bollettino valanghe

Togwotee Pass

Bridger-Teton Avalanche Center
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Pericolo valanghe

Fri
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
Senza grado
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Non aggiornato — questo bollettino è scaduto 4 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Deeply buried weak layers continue to create an unlikely chance of triggering a 1-3 foot thick slab in steep, rocky and wind-affected terrain. The unlikely potential to trigger one of these large avalanche keeps our avalanche danger Moderate today. Evaluate the snow by digging or probing in order to avoid the thin spots in a slab where triggering this weak layer is most likely.

Problemi valanghivi

  • Persistent Slabs

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

    Deeply buried weak layers continue to be a concern in steep, rocky areas that make it more likely for a skier or rider to trigger a thinner spot in the overlying slab. Consider strategies to avoid thin spots if you enter consequential terrain. Probe, dig or otherwise be aware of terrain factors that make it more likely find and trigger a thin spot. Triggering is unlikely for numerous reasons but remains a concern. The storm arriving this weekend will give this layer another test, especially if wind loading occurs.

    (1/21/2023)

    Drinkard with an older glide avalanche in the background; this avalanche type is uncommon for mid-winter, and currently not a primary concern. Weak snow exists across the whole of Togwotee, and the snowpack and depth should be assessed before committing to riding a slope. A simple check for snow depth is helpful. 

    Photo: Antonioli

Avalanche Discussion

BTAC forecasters continue to monitor the evolution of the snowpack, particularly the facets and crusts from Nov 27 that were responsible for the few larger avalanche occurrences this season. The stubborn slab above this layer is doing a fine job bridging across most terrain and otherwise protecting that layer from collapsing, so much so that you might not even know the layer is there unless you dig a hole or probe. If you are planning to ride into more consequential terrain today, remember that a stubborn avalanche problem still has a sweet spot somewhere. Gabrielle summarized the location where triggering through the variable thickness snowpack is "most possible" in yesterday's forecast: a) steep terrain, b) ranging on the southern half of the compass, and c) wind-loaded slopes. Carefully assessing these types of slopes increases your odds at avoiding trouble in these areas where avalanches are "most possible."

Significant snowfall arrives this weekend, bringing more water weight, step-down potential and slab tearing potential from surface slabs. It should be interesting to see how it plays out....from  lower angled, powder covered terrain

Regioni coperte