Bollettino valanghe

Seward and Lost Lake

Chugach National Forest Avalanche Center
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Pericolo valanghe

Sat
Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
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Non aggiornato — questo bollettino è scaduto 6 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Strong northwest winds will make it easy to trigger a wind slab avalanche 1 to 2’ deep above treeline. Blowing snow, shooting cracks, and firm snow indicates you are traveling in terrain where this problem exists. The safest option is to search for softer, wind sheltered snow. There is a small chance someone could trigger a large avalanche 2 to 6’ deep above 2,500’ especially where the snow is thin.

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It has been a tragic week of fatal avalanche accidents in the lower 48. In addition to the accident involving a large group outside of Lake Tahoe, there were two fatal accidents in the past two days in Utah. Our thoughts are with the victims, their friends and families, and all of the responders involved. All investigations are ongoing, but preliminary information may be found at sierraavalanchecenter.org and utahavalanchecenter.org.

Problemi valanghivi

  • Wind Slabs

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

    Recent Avalanches: No recent avalanches were reported over the past week. If you see any today snap a photo and send it our way. 

    Strong northwest winds averaging 20 to 40 mph have been howling overnight and are expected to continue today. This will make wind slab avalanches 1 to 2’ deep easy to trigger above 2,500’. Blowing snow is a red flag that is telling us that wind slabs are likely forming under ridgelines, convex rolls, and in gullies. The snow underneath you may feel firm or you may see shooting cracks, all indicators you are in wind slab country. Steering clear of steep wind loaded slopes and looking for wind sheltered areas below 2,500’ will be the safest option to avoid this problem.

    (2/15/2026)

    Blowing winds off of Mt Acension. Old avalanche debris and a possible crown still visible. 

    Photo: Daniel Krueger

  • Deep Persistent Slabs

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

    This deep persistent problem just won’t go away. We have seen it slowly gain strength which is a good thing, but it is hard to completely trust a weak layer especially when the avalanche could be 2 to 6’ deep. Thinner spots in the snowpack such as near ridges and rock exposed slopes are places where it will be easier to trigger one of these avalanches. Below 2,500’ a stout crust will make snowpack conditions safer if you want to avoid this problem.

    (2/15/2026)

    Large crown on the northwest face of Bone Mtn near Snug Harbor. 

    Photo: Daniel Krueger

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