Boletín de aludes

Summit Lake

Chugach National Forest Avalanche Center
Ver en el mapa

Peligro de aludes

Fri
Alta montaña
4 · Fuerte
Límite del bosque
4 · Fuerte
Bajo el límite
3 · Notable
Open full map
Desactualizado: este boletín caducó 2 years ago. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

Another warm storm began last night bringing a heavy load of snow and rain to an already touchy snowpack. The avalanche danger is HIGH. Natural avalanches that could be 1 to 4' deep are likely to have occurred already above 2,000' and we could see more before this storm tapers off midday. These avalanches could be large enough to run below treeline so overhead hazard is a concern. Travel in avalanche terrain is not recommended.

__________________________________

SPECIAL ANNOUNCEMENTS:

Lower 48 Avalanche Accidents:  It has been a tragic couple weeks in the lower 48 with six avalanche fatalities in Idaho, Nevada, Utah, Colorado, and Wyoming. These mark the first US fatal accidents for the season. Our thoughts are with our friends to the south and our deepest condolences to all those affected by these events.

Problemas de aludes

  • Persistent Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    2–3

    After Monday's storm doubled the Summit Lake snowack adding 2' of new snow, there was widespread natural avalanche activity indicating the new load was more than the snowpack could handle. Today more snow and wind is adding to that stress creating dangerous conditions. There are several weak layers within the snowpack including weak snow at the ground, which means if an avalanche is triggered it could be very large (could take the entire season's snowpack). This is a day to let the mountains adjust to this new load even if the storm moves out before the sun sets.

    (1/7/2025)

    Two avalanches on Colorado that look to have released at the ground based on the exposed ground in the start zone. 

    Photo: Daniel Krueger

  • Wind Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    1–2

    With ridgetop winds blowing in the 20s and 30s mph and new snow falling, wind slab avalanchesare likely occurring and could be 1 to 3' deep or more depending on how much of the snowpack they bring along for the ride. This problem exists in the upper elevations and we reccommend staying far away from avalanche terrain today so this should be easy to avoid.

    Cornice Fall: Cornices will be growing and they tend to be reactive during  periods of warm and intense weather. A cornice fall could trigger a large slab avalanche, which is another reason to stay away from avalanche terrain and runout zones today.

    Wet avalanches: We don't  know if the amount of rain falling on the current surface crust that disappears somewhere around 2,000' will be enough to melt it away, but if it does, there will be good chances a person could trigger a wet avalanche including loose wet and potentially a wet slab. Roller balls and lack of a surface crust will be the indicators that this has become a problem.

    (1/7/2025)

    Wind transporting snow over ridges. 

    Photo: Daniel Krueger

Regiones cubiertas