Bollettino valanghe

Togwotee Pass

Bridger-Teton Avalanche Center
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Pericolo valanghe

Tue
Alta quota
1 · Debole
Limite del bosco
1 · Debole
Sotto il limite
Senza grado
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Non aggiornato — questo bollettino è scaduto last year. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Triggering a large, destructive avalanche is unlikely, and generally stable avalanche conditions exist. The most probable location to trigger a large avalanche is on very steep (>35°) terrain on the north half of the compass. Watch for small pockets of wind-drifted snow at upper elevations. 

 

Problemi valanghivi

  • Deep Persistent Slabs

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

    Triggering a large avalanche on weak snow is unlikely, but not impossible. Weak layers of faceted snow 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. Signs of instability such as cracking, collapsing, or recent avalanches will likely not be present before triggering a large avalanche capable of propagating long distances. You're most likely to trigger an avalanche where the snowpack is thin - very steep (>35°), rocky, convex terrain should remain suspect. Multiple tracks on a slope do not indicate stability with this problem type. Manage your risk by limiting your time on very steep slopes previously loaded by the wind, and steer clear of any areas that appear visibly shallow or where it's easy to find the ground with your sled track.

Avalanche Discussion

A trace to 2" of snow fell at Togwotee over the past 24 hours, with another 2-3 inches on tap for today, accompanied by moderate southwesterly winds. This won't be enough to change the avalanche danger appreciably, and the rating has remained at Low. Below is a list of conditions that you could encounter today, especially if your backcountry adventures take you to steep, consequential terrain:

  • Fresh wind slabs. Small, isolated slabs could exist on firm surfaces by late today. These will be most common in upper elevation terrain and fairly easy to identify. 
  • Loose snow avalanches. Moving forward, any new snow will fall on top of slick crusts that exist pretty much everywhere. In areas of higher snow accumulation, you may encounter relatively small sluffs. These could occur naturally as the day progresses—pay attention to the terrain above you.
  • Riding conditions are "alpine-variable." Expect to feel a bottom crust beneath new snowfall and realize that various firm and unforgiving conditions other than powder will meet your boards or sled track today. 

Use extra caution around cornices, which have grown large. These hold the potential to trigger a much deeper avalanche here. Many observers have noticed cracks near larger cornices where these beasts are peeling away from steep ridgelines.  

Several bear sightings have been reported this spring. Bear spray, group travel, and appropriate food storage should be considered when planning the day. 

Regioni coperte