Bollettino valanghe

Tetons

Bridger-Teton Avalanche Center
Vedi sulla mappa

Pericolo valanghe

Mon
Alta quota
4 · Forte
Limite del bosco
4 · Forte
Sotto il limite
3 · Marcato
Open full map
Non aggiornato — questo bollettino è scaduto 2 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

A winter storm will continue to bring heavy snow and very strong winds today. Wind slabs will increase in size and sensitivity at all elevations and are expected to release naturally this afternoon as winds increase and the heaviest snowfall is expected. Travel in avalanche terrain is not recommended. 

The NWS has issued a Winter Storm Warning that is in effect until  Monday 11am.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Certain
    Dimensione
    1–2.5

    Significant snowfall and winds from south-southwest to the west continue to form very sensitive soft to hard winds slabs on a variety of aspects.  Depending on location, these slabs lie upon faceted snow, hard melt-freeze crusts, or hard wind packed snow. These slabs could fail on these recently buried surfaces or on density breaks within the storm snow with depths to over three feet today. Yesterday, sensitive wind slabs were reported to be easily skier triggered at all elevation and on a variety of aspects. Watch for and avoid areas of obvious wind loading in avalanche terrain.  Even treed areas and terrain that is fairly protected can have areas of unstable snow today.  

    (2/1/2025)

    Example of sensitive wind slab yesterday.

    Photo: Bob Turgeon

Avalanche Discussion

The increased danger rating is based largely on the the forecast for the Tetons today which predicts 15 inches of additional snow between 5am and 5pm with wind gusts that are to be near 60mph this afternoon. If this forecast validates, the rapid loading in steep terrain is certain to result in natural avalanche activity. Yesterday's snow was sensitive at all elevations. Small slabs were triggered on all the various snow surfaces that existed before the snow event as well as within the falling snow. Measured snow yesterday was near 12% density and much of the snow fell as graupel.  As it typical this graupel was pooling in and under cliff areas so be wary of those areas. Travel in the backcountry during high danger is never recommended and those choosing to go into the mountains are advised to stay in low angle non-avalanche terrain. 

If you see avalanche activity today, please consider submitting an observation HERE. Observations allow everyone to gain a better and more complete understanding of conditions. 

Regioni coperte