Lawinenlagebericht

Togwotee Pass

Bridger-Teton Avalanche Center
Auf der Karte ansehen

Lawinengefahr

Fri
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
Keine Stufe
Open full map
Veraltet — dieser Lagebericht ist 6 months ago abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

Triggering a large slab avalanche that fails on buried weak layers is possible in very steep, north facing terrain above 8,500’ today. Signs of instability will likely not be present, so avoiding suspect slopes is key. Watch for shallow wind slab formation above 9,000’ as a strom brings several inches of snow and increased winds to the area.

Lawinenprobleme

  • Persistent Slabs

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

    Weak layers of snow including surface hoar and facets are buried 2-3 feet below the surface on shaded slopes. While the sensitivity of this layer is decreasing, riders may still be able to trigger a large, hard slab avalanche in very steep terrain over 35 degrees. Northerly aspects above 8,500’ are where this layer is weakest and where the majority of recent persistent slab activity has been observed. Signs of instability including fresh avalanches and collapses in the snowpack may not be present before triggering. Giving very steep, north facing slopes a wide margin is the best way to manage hazard right now due to the difficult to predict nature of this problem, and the high consequence of triggering an avalanche of this size.

     

    (2/27/2026)

    Recent avalanche near Split Rock. This avalanche was on the smaller side, but if piled up in a creek of depression (terrain trap), it could have still buried a rider.

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–1.5

    Up to 4 inches of new snow could accumulate by evening. Moderate winds out of the west, switching to the northwest by the afternoon will redistribute the new snow and form shallow soft slabs in wind-loaded upper elevation terrain. Slab depths and sensitivity will increase throughout the day as new snow accumulates. Human triggered avalanches around 8 inches deep may become possible by the afternoon in very steep and wind-loaded terrain. While mostly on the smaller side, these slabs have the potential to catch and carry riders. 

Avalanche Discussion

A Pacific storm is bringing snowfall and stronger winds to the region today. There is some uncertainty with regard to how much it will actually snow today as forecast models have been inconsistent. As of this morning, several inches of new snow has fallen in the higher terrain, with another 2-4 possible throughout the day. Keep an eye on conditions as they change today. Be ready to adjust your travel plans if the strom produces and you see evidence of wind-loading or signs of instability in the new snow.

Deeper in the snowpack, persistent weak layers that formed in January/February remain a concern on north facing slopes above 8,500’. These weak layers are slowly gaining strength, but have not changed as quickly as the weather. Large avalanches involving weak snow from January were reported last week. The snow from our February storms has settled and become strong, making it difficult to impact the weak snow underneath. Despite this, there are still thin spots in the overlying slab where a rider may be able to trigger an avalanche. Very steep, north facing slopes are the bullseye for instability. Use caution and build some margin into your travel plans around these terrain features for the time being. 

Thanks for submitting your observations. Please continue to share what you see out there. It’s a huge help!

Abgedeckte Regionen