Bollettino valanghe

Togwotee Pass

Bridger-Teton Avalanche Center
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Pericolo valanghe

Fri
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
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

Wind slabs that formed with Monday's snowfall, and the strong winds that followed, remain a problem. You’re most likely to encounter a slab that you could trigger in upper-elevation terrain, particularly where they are resting on hard, icy surfaces or on weak snow closer to the ground.  Sunshine and warmer temperatures mid-day may impact snow surfaces, potentially leading to easier-to-trigger wind slabs. 

If you are reading this forecast in an email, be sure to click the Full Forecast button to see the entire forecast. You'll find the Full Forecast link just below and to the right of the Bottom Line section.

 

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–1.5

    Wind-blown snow that fell Monday continues to add stress to persistent weak layers buried 2-3 feet deep as well as at the ground. These layers are widespread at middle and upper elevations and are responsible for the majority of recorded avalanches so far this season. Consider terrain traps beneath you and look for signs of wind blown snow like drifting and cornices. Wind slab avalanches could involve more snow than expected due to the weak layers beneath.

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1.5–2.5

    Early-season persistent weak layers are widespread throughout this zone. In the deeper portions of this zone, these layers are typically found in the bottom half of the snowpack and have been showing better stability. In the middle elevations and shallower areas, the weak snow near the ground is especially pronounced and produced. You're likely to find weak layers near the ground as well as sandwiched between old wind slabs. 

    Triggering a persistent slab avalanche remains possible in terrain with the following characteristics:

    • Steep: slopes in prime-time avalanche terrain around 35-45 degrees.
    • Wind-affected: heavily wind-loaded by past or recent wind events.
    • Alpine flavor: complex, windswept terrain with rock ribs, cliff bands, or convexities.

    (2/11/2023)

    Brush Creek Avalanche showing a surface snow avalanche and additional, weaker snow layers breaking near the ground. 

Avalanche Discussion

Reported avalanche activity on buried weak layers has been mostly limited to several days following new snow. Storng winds and new snow on Monday may have set the stage for some more human-triggered avalanches today. Be mindful of those weak layers, especially in big terrain or when riding above terrain traps. Wind speeds were high enough that slabs may appear firm and stubborn which may make them break wider and further above you than you might expect. 

Regioni coperte