Avalanche forecast

Togwotee Pass

Bridger-Teton Avalanche Center
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Avalanche danger

Sun
Alpine
3 · Considerable
Treeline
2 · Moderate
Below
No rating
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Highlights

Dangerous avalanche conditions exist. Triggering an avalanche up 1 foot thick is likely in wind-loaded terrain at upper elevations. Recent snow and wind continue to stress weak layers buried 3-5 feet deep, increasing the chances of triggering a larger avalanche. Conservative terrain selection and avoiding steep, wind-loaded slopes is recommended today.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    1–2

    Today's forecasted new snow and strong west/southwest winds will form sensitive wind slabs up to 1 foot thick at upper elevations. These slabs will continue to grow as winds continue to transport new snow today and will become likely for riders to trigger. Below 9000', wind slabs will be possible in steep exposed terrain. Fresh wind slabs also have the potential to step down to buried weak layers, creating a larger, more dangerous avalanche. Pillows, fresh cornices, and stiffened surfaces are all indicators that winds have recently loaded slopes. Stay alert for signs of instability such as recent avalanches and shooting cracks near exposed ridgelines, and cross-loaded terrain features. If these signs are present, move to lower-angle slopes. Giving very steep and wind-loaded features a wide margin is the best way to manage this problem today.

    (3/20/2025)

    Obvious signs of wind loaded terrain below the freshly formed cornice. 

    Photo: Bridger-Teton Avalanche Center

  • Deep Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1.5–3

    Weak layers of sugary facets exist in the middle of the snowpack and near the ground on most slopes. Avalanches involving these layers will be 2-3 feet deep, and up to 5 feet deep on heavily wind-affected slopes. Triggering one of these dangerous avalanches is possible on very steep slopes over 35 degrees. Signs of instability such as cracking, collapsing, or recent avalanches may not be present before triggering a large avalanche capable of propagating long distances. Multiple tracks on a slope do not indicate stability with this problem type. Suspect terrain includes very steep, rocky, and/or wind-affected slopes where thin spots exist, making it possible for humans to impact buried weak layers.

    Recent snow and wind are stressing these buried weak layers and increasing the likelihood of triggering a persistent slab avalanche. Wind slabs triggered on the surface could step down to deeper weak layers resulting in a larger avalanche than expected.

    The last human triggered persistent slab avalanche occurred on March 2nd in terrain similar to this.

    Photo: Dakota Richardson

Avalanche Discussion

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