Bulletin d’avalanche

Tetons

Bridger-Teton Avalanche Center
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Danger d’avalanche

Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
1 · Faible
Périmé — ce bulletin a expiré 9 years ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Conditions are dangerous and serious avalanche accidents are possible. Well developed weak layers of faceted snow persist above a hard crust and are unstable. Large slab avalanches can be triggered by the weight of a single person or after a slope has been crossed by other riders or skiers. Expert terrain analyses skills, a strong understanding of the avalanche problem and conservative terrain choices are essential for safe travel in avalanche terrain. Avalanches are unlikely below an elevation of 7,500 feet except on isolated terrain features.

Problèmes avalancheux

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    2–3

    Slabs are two to four feet deep at the mid and upper elevations. These slabs are likely to be human triggered on steep avalanche prone slopes that have not recently slid. At the lower elevations small pockets of soft slab up to 18 inches in depth could be human triggered in isolated areas. These small slabs could be a hazard above terrain traps.

Avalanche Discussion

High pressure and inversion conditions will continue. Skies will be mostly sunny and temperatures will begin near twenty degrees and rise to near thirty at higher elevations while valleys start at or below zero and have similar highs. Winds are to be northwesterly and Light.The general avalanche hazard will be Considerable above 7500 feet. Slab avalanches could be triggered as the first person impacts a slope or after it has been tracked several times. These slabs could have depths to four feet. This hazard exists just below 7500 on northerthly aspects in wind loaded areas with much smaller slab depths.

Régions couvertes