Bollettino valanghe

Presidential Range

Mount Washington Avalanche Center
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Pericolo valanghe

Mon
Alta quota
1 · Debole
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
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Non aggiornato — questo bollettino è scaduto 8 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Triggering a large avalanche is unlikely. Still, watch for small pockets of smooth, wind-drifted snow on steep east-facing terrain, where even a small slide could have serious consequences due to the steep, firm surfaces. Travel on textured, wind-hardened snow to reduce your chances of triggering an avalanche.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely
    Dimensione
    1–1.5

    What and where is it: You could find small slabs of wind drifted snow in wind-protected areas of steep, east-facing terrain above 3000 feet in elevation. Where slabs exist, they are generally small and limited in size, most commonly found at mid elevations in sheltered gullies, below rollovers, and behind terrain features that collect drifting snow. The Summer Lion Head Trail and the Gulf of Slides are examples of where these drifts can form.

    How can you recognize it: Watch for areas of snow with a smooth, rounded, or pillowy surface that contrasts sharply with the textured, refrozen, wind-scoured snow. With good visibility, these differences are often easy to spot. Dig into the snow and use shear or compression tests to better understand the sensitivity of any small wind slabs.How can you manage it: Manage this problem by avoiding smooth, wind-drifted snow on steep slopes. Most slabs in avalanche paths are expected to be shallow, but depth can vary in sheltered pockets. If you find a slab deeper than boot-top, stop and assess how big it is, how continuous it is, and what’s below it, as it may be more consequential.

Avalanche Discussion

Remember that LOW avalanche danger does not mean no avalanche danger.

Overall snow stability is good in most areas, but isolated pockets of wind slab still exist and should be evaluated before committing to traveling on them. Recent field observations found a mix of wind-scoured surfaces with small, wind-drifted pockets confined to sheltered terrain features. 

Even with generally stable conditions, continue to watch for smooth, wind-drifted pockets on steep east-facing terrain, where even a small slide could have serious consequences on firm underlying surfaces.OBSERVATIONS: Please consider submitting an observation on our website or in the new Avy phone app of what you are seeing in your travels. Submitting an observation hones your skills, informs other users, and improves our forecasts.

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