Bollettino valanghe

Banner Summit

Sawtooth Avalanche Center
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Pericolo valanghe

Thu
Alta quota
1 · Debole
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
Non aggiornato — questo bollettino è scaduto 7 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Conditions are generally stable, and avalanches are unlikely. We have not received significant amounts of new snow or observed fresh avalanches in about 2 weeks. Watch for hard wind drifts and slabs in extreme terrain.

Avalanche Discussion

You are most likely to find trouble on slopes around 40 degrees or steeper. As always, "extreme" alpine terrain deserves our respect; think about where even a small avalanche could carry you before committing to consequential, wind-loaded slopes. Some specific things to consider when planning your day in the mountains:

Wind Slabs: Most wind slabs have stabilized and are not sensitive to the weight of a skier or snowmobiler. That said, pay attention in very steep terrain where hard wind slabs overlie weak, sugary faceted snow. The "hard slabs over facets" can sound or feel hollow or "drummy". They are most widespread in alpine terrain. You'll commonly find them in chutes and couloirs or on big exposed alpine faces. Old, weathered hard slabs are typically triggered near rocks (buried or exposed) or on the edges where the slab thins to less than 2 feet thick. 

Cornices: Some cornices are very large, and many are sagging or overhanging. It can be difficult to tell where solid ground stops and the cornice starts; give them space when traveling on ridgelines. Falling cornices can be great triggers for wind slabs below them.

It's easy to let your guard down during extended LOW danger. Good travel habits will continue to help you reduce your risk of even small slides. 

  • Enter the mountains with a plan: Discuss route options, decision points, and off-limits terrain before heading out.
  • Carry the appropriate gear: Beacon, shovel, and probe. Check that everything functions properly at the trailhead.
  • Monitor conditions: Is the wind transporting more snow than expected? Is it snowing more than the forecast called for? 
  • Look for obvious signs of instability: Cracking, collapsing, or recent avalanches indicate that avalanches are possible.
  • Expose one person at a time in steep terrain.

 

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