Bulletin d’avalanche

Togwotee Pass

Bridger-Teton Avalanche Center
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Danger d’avalanche

Alpin
2 · Modéré
Limite forestière
1 · Faible
Sous la limite
Sans niveau
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Périmé — ce bulletin a expiré 6 years ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

New snowfall, available snow and strong winds have loaded leeward slopes and stiffened wind slabs. Mountain temperatures are also starting out 5 to 10 degrees warmer than yesterday morning, and up-side-down conditions have developed. In steep, wind loaded terrain above 8,500 feet, skiers and riders could trigger small to large wind slabs. These slabs could become more susceptible to failure as temperatures warm and periods of sunshine heat up snow surfaces. Monitor temperatures and the impact of the sun, and transition to shaded terrain if snow surfaces start to become affected. The snowpack is mostly stable below 8,500 feet, and avalanches are unlikely.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–2

    Since Friday afternoon, 15 to 20 inches of new snow containing around 1.5 inches of snow water equivalent has accumulated. Strong southwesterly to westerly ridgetop winds accompanied this snowfall, and wind slabs have formed in leeward terrain. Backcountry travelers could trigger these slabs to depths of one to three feet on steep, avalanche prone slopes. These slides are most likely to occur in terrain that held October snow. In these areas, anchors are being covered, and old snow surfaces near the base of the snowpack provide potential failure zones.

Avalanche Discussion

( Discussion is generated from the previous day's afternoon forecast. )Periods of light to moderate snowfall will continue overnight before the jet stream moves north and a drying trend begins on Monday. Overnight lows in the mountains will be in the low 20s before rising to near freezing during the day. Southwesterly to westerly ridgetop winds will range from 15 to 25 miles per hour.The general avalanche hazard is expected to be Considerable at the higher elevations in the Tetons on Monday. In steep, wind loaded terrain above 9,000 feet, skiers and riders could trigger slab avalanches with depths ranging from one to four feet. In the Togwotee Pass and Southwest Trails forecast zones, where storm totals are less, the general avalanche hazard in the mountains is expected to be Moderate. There, similar slab avalanches up to three feet deep could be triggered on steep, avalanche prone slopes. In all the forecast zones, the likelihood of triggering a slide will be highest in terrain that held snow from October. Take this into account when evaluating the snowpack and terrain.As the Grand Targhee Resort prepares to open on Friday, the mountain will be closed to uphill travel beginning on Monday.

Régions couvertes