Lawinenlagebericht

Presidential Range

Mount Washington Avalanche Center
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Lawinengefahr

Tue
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Veraltet — dieser Lagebericht ist last year abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

You could trigger a large avalanche in wind-drifted snow on steep terrain above 3000 feet. Carefully evaluate the snowpack, watch out for shooting cracks under your feet, and deeper snow drifts that feel stiff or hollow. 

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–2

    What and where is it:After several days of snowfall and strong west/northwest winds, large wind slabs primarily on northeast, east, and southeast aspects may appear stubborn but could be triggered by your weight. 

    How can you recognize it: Wind slabs can be identified as areas of smooth, rounded snow that may be over a foot thick. While traveling, watch for snowdrifts deeper than your boot tops, as a sign that you may have encountered a wind slab. Pay attention to cracks in the snowpack under your feet and use a pole or a shovel to assess the thickness and sensitivity of the slab. How can you manage it:Actively look for areas of newly drifted snow and avoid deep drifts to limit your exposure to avalanche hazards. Avoid very steep terrain features and convex rollovers where the likelihood of triggering a large avalanche is higher today. On west-facing aspects, the wind slab avalanche problem is likely to be smaller and less consequential. If you're uncertain about the sensitivity or location of wind slabs, consider taking an alternate route through simpler, low-angle terrain.

Avalanche Discussion

While recently formed wind slabs may begin to stabilize with time and warmth from the sun, it still may be easy to find unstable snow today with the potential to produce a large, hard, and dangerous avalanche. The most likely place to trigger a large windslab is in very steep terrain around convex rollovers and snow slopes that are poorly supported from the snowpack below. 

It is worth noting the size and connectivity of avalanche terrain, especially in eastern ravines like Tuckerman Ravine, Gulf of Slides, and the Summer Lion Head Trail. Consider the ability for an avalanche to occur in places with a much deeper and more developed snowpack than has been seen in the last several years. 

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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