Bollettino valanghe

Presidential Range

Mount Washington Avalanche Center
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Pericolo valanghe

Wed
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
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Non aggiornato — questo bollettino è scaduto 4 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Snow drifts from the recent 2 feet of snow may be sensitive to a human trigger. In mid and upper elevation terrain, watch out for drifts of snow with a smooth surface. You can reduce your chances of triggering an avalanche by traveling on wind sculpted snow. 

Being caught in even a small avalanche can have deadly consequences, especially with firm snow surfaces and exposed rocks, ice, and vegetation.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2

    Watch out for recently formed wind slabs at middle and upper elevations on east-facing and south-facing slopes. Wind slabs exposed to the strong northwest wind are likely to be firm and stubborn to a human trigger, especially at upper elevations. Slabs found in wind sheltered locations at middle elevations are the main concern. This problem can be identified by looking for areas of smooth snow where your boot can penetrate deeper than boot-top. 

    The likelihood of finding a thin spot (like a buried rock) with this avalanche problem is increased due to the early season snowpack and could be the trigger-point for an avalanche.

Avalanche Discussion

It should be recognized that today’s forecast includes some uncertainty. While today’s forecasting team is confident in the sensitivity and distribution of the avalanche problem, we just don’t have good data on size. The amount of snow available to transport after these early season storms is challenging to predict due to exposed ground vegetation holding onto snow. Poor visibility over the last two days has also challenged our ability to get field observations needed to determine size of any newly formed wind slabs. 

Thanks to everyone for taking the time to submit observations of snow and avalanche conditions. If you are out today, and the skies clear to allow better visibility please take a few minutes at the end of the day to add an observation at our website. Your observations help us produce a more accurate forecast, and helps the community make better decisions in avalanche terrain by having more information. 

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