Lawinenlagebericht

Presidential Range

Mount Washington Avalanche Center
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Lawinengefahr

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

Kernpunkte

You could trigger an avalanche in wind-drifted snow today. The easiest place to find the avalanche hazard is on steep south-facing and east-facing slopes above 4000 feet in elevation. Carefully assess snow in these areas to identify where new wind slabs have formed on top of older, larger wind slabs. Remember that ski or boot tracks do not guarantee that a slope is safe to travel on.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–1.5

    Fresh wind slabs had the opportunity to form yesterday on south-facing and east-facing slopes at middle and upper elevations. Though these new slabs are expected to be small in size, they will likely be variable in sensitivity, hardness, and location. Areas with more wind protection will likely have slabs that are slightly softer than those found in more wind-exposed locations. Pay attention to these changes today and watch for shooting cracks in the snow, hollow-sounding snow, and changes in boot penetration depth as signs that conditions could be dangerous. 

    Underneath these new wind slabs, old wind slabs on east and southeast aspects at middle elevations are becoming increasingly stable and less prone to triggering. Though these areas continue to become less of a concern, it may be challenging to accurately identify and assess where this hazard exists unless standing directly on top of it. The traverse on Summer Lion Head trail and protected pockets in Sluice and the Lip are examples of slopes harboring an old but larger wind slab. While these slabs are continuing to gain strength, recent observations suggest that lingering instabilities could remain.

Avalanche Discussion

Traveling in eastern avalanche terrain today will take some strategy in order to identify and safely assess the snowpack in steep, wind-protected areas. Expect to find variable conditions above 3000 feet in elevation today which will likely be a mix of scoured snow surfaces, stiffer wind-textured snow, and areas of softer wind slabs. These surface changes have implications for the stability of the surrounding snowpack. It is likely that the majority of new and old wind slabs you could encounter today will be stubborn or unreactive in response to the weight of a person. However, watch out for subtle changes in the snow where new wind slabs could be sensitive and prone to avalanching. 

Older and hidden wind slabs are also worth keeping in mind today. Though these are likely unreactive or stubborn in sensitivity, it is not impossible to find a “sweet spot” that produces an avalanche that has the potential to bury a person. Strategic terrain choices and travel practices will be a good line of defense for mitigating this risk if choosing to travel in avalanche terrain today. 

OBSERVATIONS: Please consider submitting an observation 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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