Lawinenlagebericht

Presidential Range

Mount Washington Avalanche Center
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Lawinengefahr

Tue
Hochgebirge
3 · Erheblich
Waldgrenze
4 · Gross
Unterhalb
2 · Mässig
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Veraltet — dieser Lagebericht ist 3 years ago abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

Large amounts of wind-drifted snow have created dangerous avalanche conditions. East-facing and south-facing steep slopes are the most likely places to trigger an avalanche or encounter a large, spontaneous avalanche. Traveling on hard snow surfaces and reducing your exposure to hazards and steep slopes above you can help avoid being caught in an avalanche.

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–3

    Wind slabs varying in depth and sensitivity can be found primarily on east-facing and south-facing slopes at all elevations. Human-triggered avalanches and natural avalanches are likely in these areas. Slabs will be deepest and most sensitive at middle elevations in the steep ravines around Mount Washington. Strong and extreme winds have likely pushed slab formation lower on the slopes, while scouring the upper start zones. Look for areas of smooth, rounded snow to identify new wind slabs compared to the textured, wind-affected snow.

    Wind loading is likely to continue throughout the morning and has the potential to continue to build wind slabs. While this is happening, there will continue to be a possibility of large or very large natural avalanches.

    Eliminate exposure to large east and south-facing avalanche paths to avoid the greatest hazards when route planning today.

Avalanche Discussion

10 - 14 inches of snow from the recent storm on Saturday has continued to be transported and redistributed by northwest wind.  With poor visibility overnight and this morning, there is still uncertainty around the size of new slabs and the extent of recent avalanche activity. There should be plenty of red flags today that identify dangerous conditions from a safe distance. Look for wind-blown snow at the ridgelines (which may be in volumes large enough to look like clouds), recent avalanches or debris, and shooting cracks on the trails and low angle terrain. 

Expect continued winds and blowing snow to limit visibility and may make it challenging to identify the location of large wind slabs that have not avalanched naturally. 

Continued extreme winds may contribute to snow stability as the day moves on, especially at high elevations, but they are continuing to move snow onto lee aspects and continue the threat of large natural avalanches.  Even in areas that appear to have avalanched already, there is the potential that these paths can “reload” and avalanche again. 

The Lion Head Summer Trail is CLOSED due to increased avalanche hazard. The Lion Head Winter Route is OPEN and the most direct route to the Mount Washington Summit from Pinkham Notch. 

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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