Bollettino valanghe

Salt River and Wyoming Ranges

Bridger-Teton Avalanche Center
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Pericolo valanghe

Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato
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Non aggiornato — questo bollettino è scaduto 6 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Temperature inversions strengthened overnight, and the mountains are starting out around 10 degrees warmer than yesterday. Dangerous avalanche conditions exist above 7,500 feet. On a variety of aspects and elevations, backcountry travelers still have the potential of triggering large to very large persistent slab avalanches in steep avalanche terrain. While these slabs are becoming more difficult to trigger, the consequences remain the same, and involvement in one of these slides could easily be fatal. These slabs could become more sensitive to human triggers on slopes impacted by the sun as the day warms. Cautious route finding and conservative decision-making are the best tools to avoid this hazard.

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2–3

    Faceted weak layers can be found on most aspects and elevations, and they vary significantly across the landscape. This variability requires an extra margin of safety; now is not the time to let your guard down and become complacent. Above 7,500 feet, backcountry travelers could trigger persistent slab avalanches failing on these weak layers with depths ranging from two to four feet. Slabs are likely to range from one to two feet deep below 7,500 feet. Large triggers, such as snowmobiles, are more likely to initiate one of these deadly avalanches. Don’t let yourself be lulled into thinking a slope is safe if it has been previously ridden or skied.

Avalanche Discussion

( Discussion is generated from the previous day's afternoon forecast. )High pressure will remain over the region on Monday, and skies will be mostly clear overnight and throughout the day. Temperature inversions will strengthen tonight with the valleys dropping to near -10. Mountain temperatures will fall into the upper single digits before climbing into the mid-20s in the afternoon. Westerly to northwesterly ridgetop winds will range from 5 to 15 miles per hour.Avalanche conditions remain dangerous in the Teton and Southwest Trails forecast zones, and the general avalanche hazard is expected to remain Considerable. On a variety of aspects and elevations, backcountry travelers still have the potential of triggering deadly persistent slab avalanches with depths ranging from two to four feet. The snowpack up on Togwotee Pass is thin and has poor structure, but the slab depths are smaller, and the hazard is expected to stay at Moderate. The region often has persistent slab problems that develop early in the season, but they are usually limited to higher elevation slopes with aspects on the northerly side of the compass. This is not the case this season. Faceted weak layers can be found on most aspects and elevations, and they vary significantly across the landscape. This variability requires an extra margin of safety; now is not the time to let your guard down and become complacent.

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