Bollettino valanghe

Soldier & Wood River Valley Mtns

Sawtooth Avalanche Center
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Pericolo valanghe

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

In sintesi

The snowpack is generally stable and triggering an avalanche is unlikely. Watch for rocky, wind-swept slopes with variable snowpack depths—these are the areas where you could find trouble. 

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely
    Dimensione
    1.5–2

    Your odds of triggering a large, dense slab avalanche are low but not zero. Avalanches are easier to trigger in thin spots at the edges of slabs and wind-features. Watch for these trigger points on the northern half of the compass, where the wind frequently blows, and the snowpack depth is variable. Many shady slopes in rocky alpine cirques fit that description. Some visual clues to identify suspect slopes:

    • Stiff or textured surfaces and wind-pillows, evidence the wind has moved snow  
    • Rocks sticking out of the snow, either near or well below ridgelines
    • Terrain where some part of the slope is at least 35 degrees in steepness

    If you do trigger an avalanche, you probably won't observe obvious signs of instability like snowpack collapsing or cracking beforehand. Any triggered avalanches have the potential to break above you. 

Avalanche Discussion

Generally stable conditions exist, and avalanches are unlikely. This zone's last confirmed large, dry slab avalanche occurred three weeks ago. 

Even though triggering a slide is unlikely, shaded, rocky alpine cirques give us pause. These areas often have variable snowpack depths due to wind scouring and loading around prominent terrain features like ridgelines and rocky ribs. Trigger points exist where the upper snowpack is stiff, and the slab is thin. The western half of this zone has the most terrain that matches this description. Check out this video for a great explanation of triggering a Persistent Slab from a thin spot. 

When playing in avalanche terrain, you can always stack the odds in your favor by traveling with a knowledgeable partner and avoiding slopes that end in terrain traps, such as thick trees, cliffs, and creek bottoms.

Regioni coperte