Bollettino valanghe

Summit Lake

Chugach National Forest Avalanche Center
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Pericolo valanghe

Thu
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato
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Non aggiornato — questo bollettino è scaduto 7 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

There is a break between storms today, but yesterdays storm brought a few inches of new snow above 2,500' along with strong easterly wind. It is likely a large avalanche could be triggered today by a person on weak snow buried up to 3' deep anywhere above 1000'. A person could also trigger a smaller avalanche up to 1.5' deep in new and windblown snow above 2,500'. All of these problems can be avoided by choosing low angle slopes with nothing steep above. 

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Join us Friday, Feb. 13, for the annual Snowball fundraiser! This event is a collaboration with the Alaska Avalanche School and is always a fun way to support two nonprofit organizations that provide avalanche information and education in our area. Silent auction, beverages, hors d'oeuvres, and music by Hope Social Club! Tickets and event info at alaskaavalanche.org

Upcoming Free Avalanche Workshops - CNFAC is hosting several avalanche awareness and rescue workshops in the coming weeks, starting this Saturday, Feb 7th, at Arctic Valley Lodge. These will be hosted in Anchorage, Seward, and Turnagain Pass. Click this link to get more information!

Problemi valanghivi

  • Persistent Slabs

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

    Recent avalanches:  An observer noticed just one small new avalanche in the Summit area yesterday on Summit Peak, but several large avalanches occurred yesterday afternoon near the Hope junction and just north of there on the border of the Summit and Turnagain Zones. A widespread natural avalanche cycle occurred in Summit Lake last week. Large avalanches were observed on Moose Mtn, Roaring Ridge, Manitoba, Butch, and Raven's Ridge.

    The snowpack in Summit Lake is thinner than its neighboring zones and the weak layer of facets buried up to 3' deep is more sensitive to the weight of a person. The weight of the water (0.3") and wind (20 to 30 gusting to 60 mph) that came yesterday added stress to this weak layer. It could be easy for a person to trigger a large avalanche on this layer today. There may or may not be any red flags like whumpfing or shooting cracks prior to one of these avalanches releasing. An avalanche could be triggered even if there are many tracks already on the slope. The safest plan today involves terrain that is less than 30 degrees and does not cross under steep slopes above. Even small features could be a problem if they end in a gully where snow could pile up. If you find yourself traveling in steep terrain ensure only one person at a time is exposed and others are staged in spots that are safe from runout.

    (2/1/2026)

    This avalanche occurred naturally last week, but it is an example of what a person could trigger today. 

    Photo: Andrew Schauer

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    1–2

    There is a break between storms today, but there are a variety of wind slabs that could be easy for a person to trigger today in the alpine. Easterly winds were blowing in the 20s and 30s mph on Summit Peak yesterday. Above 2,500' where precipitation was falling as snow, fresh wind slabs were forming up to 1.5' deep. Easterly winds up to 30 mph are forecast again today. With winds this strong, wind slabs could be anywhere in exposed areas, but especially under ridgelines and on steep rollovers. Keep in mind that triggering a new wind slab could be enough weight to trigger a much larger and more dangerous avalanche described above.

    Wet loose: Temperatures are still warm this morning so surfaces may still be wet and wet loose avalanches may still occur. Watch for rollerballs to know a person could trigger one of these avalanches. 

    (2/3/2026)

    This photo was taken around 10pm on Feb. 3 from the AK RWIS camera looking north at Summit Lake.

    Photo: Mik Dalpes

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