Bollettino valanghe

Presidential Range

Mount Washington Avalanche Center
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Pericolo valanghe

Mon
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
Senza grado
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Non aggiornato — questo bollettino è scaduto 5 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

You could trigger an avalanche on steep north-facing and east-facing slopes above 3000 feet. Look out for new snow being blown by the wind and forming deep, soft drifts. Evaluate soft snow drifts carefully and remember that even a small avalanche could have serious consequences if it causes a fall on the hard, icy snowpack buried underneath.In addition to carrying normal avalanche rescue equipment, mountaineering tools (crampons, ice axe, and helmet) and practiced skills can help you mitigate the risk of a dangerous fall on icy slopes.

Problemi valanghivi

  • Wind Slabs

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

    What and where is it: Up to 6 inches of new snowfall combined with high, shifting winds could form sensitive wind slabs on top of a slick, icy snowpack buried below. The most likely place to find new wind slabs is on steep snow slopes that face north and east. 

    How can you recognize it: Look for smooth, rounded drifts deeper than your boot top that could be poorly bonded to the icy snowpack underneath. Thicker slabs may produce shooting cracks, which is an obvious sign of instability. Look out for plumes of blowing snow and rapid filling-in of boot tracks and ski tracks.How can you manage it: Look for new snow being blown by the wind and recently formed wind drifts that will be smooth. Dig down and investigate how well the new snow is sticking to the hard snow below before traveling across steep slopes. Check this interface often with hand shears, and factor in the consequences of even a small slide in steep, icy terrain.

Avalanche Discussion

Winter has fully returned to the Presidential Range and increasing avalanche hazard should be top-of-mind today. In most areas, new wind slabs are not expected to be large. However, consider the icy and refrozen snowpack that the new snow is falling on. This setup creates the potential for a small avalanche to cause a dangerous fall on an unforgiving, hard snowpack where self-arresting may not be possible. Travel with mountaineering tools (crampons, ice axe, helmet) to mitigate a slip and fall in steep terrain and understand that there might be little or no margin for error if you are skiing or climbing in steep terrain today.Low Elevations: Due to insufficient snow coverage, we are moving to a “no rating” for low elevations. Isolated snow hazards may still exist, but there is not enough continuous snow to support an avalanche danger rating.

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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