Lawinenlagebericht

Togwotee Pass

Bridger-Teton Avalanche Center
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Lawinengefahr

Mon
Hochgebirge
3 · Erheblich
Waldgrenze
2 · Mässig
Unterhalb
Keine Stufe
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Veraltet — dieser Lagebericht ist last year abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

Avalanche conditions are dangerous at upper elevations where wind slabs 1 - 2 feet thick recently formed. Avalanches will be easier to trigger as you climb higher or into wind-exposed terrain. Recent snow and wind continue to stress weak layers buried 3-5 feet deep, increasing the chances of triggering a larger avalanche. Use conservative terrain selection and consider avoiding steep, wind-loaded slopes today.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–2

     Over the past 24 hours, Togwotee has received up to 10" of new snow with strong winds predominantly from the west/southwest. These conditions have redistributed the recent snow-forming wind slabs 1 - 2 feet thick at all elevations. The likelihood of triggering an avalanche will increase the higher you climb, or on wind-exposed terrain.  Given yesterday's strong winds, look for slab development further down and across slopes than normal - especially near ridgelines, gullies, and leeward slopes. 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. Cracking and recent avalanches are sure signs of instability within the recent snow. Giving very steep and wind-loaded features a wide margin is the best way to manage this problem today. Be careful near terrain traps such as road cuts and creek bottoms where even a small avalanche can be consequential. 

    (3/20/2025)

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

    Photo: Bridger-Teton Avalanche Center

  • Deep Persistent Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    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

Please give us a hand with our forecasts by submitting your observations HERE. You can also text what you see to 307-264-3050. You can choose to be anonymous or simply text a photo with an elevation and aspect. Thanks!

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