Bollettino valanghe

Summit Lake

Chugach National Forest Avalanche Center
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Pericolo valanghe

Fri
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato
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In sintesi

Many large natural avalanches were observed in the Summit Lake area yesterday. Natural avalanches up to 2' deep are possible today. Human triggered avalanches large enough to bury a person remain likely today as the warm and stormy conditions continue. We recommend carefully evaluating avalanche terrain and being aware of runout zones from overhead avalanche paths. 

Problemi valanghivi

  • Persistent Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2.5

    The rain, wind, and new snow over the past few days is overloading buried weak layers and causing large natural avalanches throughout the Summit Lake forecast area (see ob for more details). Natural and human triggered avalanches up to 2' deep are the main concern today as stormy weather continues. The majority of the natural avalanches observed yesterday appear to have released in wind loaded start zones at upper elevations and entrained wet snow in the runout zone. These avalanches are large enough to bury a person and we recommend avoiding runout zones from avalanche paths that are being actively loaded by additional rain, snow, and wind today. 

    Wet Loose: The wet snow on the surface will also make wet loose avalanches easy to trigger today. These avalanches are especially dangerous near terrain traps like gullies and cliffs. 

     

     

    (12/4/2024) Natural Avalanche on the west aspect of Templeton that released on 12/3 or 12/4.  Photo: Daniel Krueger

  • Glide Cracks

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    2–3

    From the limited observations over the past few days, we have seen an uptick in glide avalanche releases. These large and destructive avalanches release spontaneously and it is not uncommon for glide avalanches to occur even if there is no preexisting crack on the snow surface. The combination of warm temperatures and liquid water in the snowpack makes gilde avalanches more likely to release. We recommend extra caution today by giving areas with glide cracks a wide berth, especially in the runout zones below existing glide cracks. 

    (12/4/2024) Photo: Daniel Krueger

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