Bollettino valanghe

East Cabinet Mountains

Idaho Panhandle Avalanche Center
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Pericolo valanghe

Sat
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
3 · Marcato
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Non aggiornato — questo bollettino è scaduto 4 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Your highest chances of triggering an avalanche will be in terrain that is steep, open and lacks vegetation. Storm snow and wind slabs will still be a concern at upper elevations where wind has compressed or transported the new snow and created slabs. An avalanche triggered in the new snow could step down to the deeper persistent weak layers and create a much larger avalanche. For the safest riding stick to terrain less than 30 degrees that is sheltered by the trees.

Problemi valanghivi

  • Persistent Slabs

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

    Our current snowpack is harboring a persistent weak layer above 4,500' that can be found across the area on all aspects. This layer is close to the ground, it consists of crust layers and weak sugary snow that developed in early November. Stability tests are proving this layer has the potential to propagate and create avalanches that could fail 2 to 3 feet deep in the snowpack. Cracking and collapsing on this weak layer were observed this week across all zones of the forecast area. This problem is most likely to fail in steep and open terrain that lacks vegetation to anchor the snowpack (rocky or grassy slopes). Stability tests are also showing that thinner snowpacks are much easier to trigger. Observations from our thin snowpack of the Purcells were propagating with light force on Wednesday.

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1.5–2

    Our latest storm has graced us with 1 to 2 feet of snow across the forecast area. This new snow is settling and becoming less of a concern as the storm exits the area. Yesterdays observations were showing that the new snow will be mostly a concern in open terrain exposed to the wind, particularly near ridgelines. In terrain that is sheltered by timber the snow is light, soft and lacks the cohesion to create any storm or wind slab avalanches.

Avalanche Discussion

Since Tuesday night the area has been getting absolutely whalloped with new snow. It has fallen light and cold and created some excellent riding out there. Our snowpack is pretty bottomless still and lacks much of a base, so the potential to hit stumps and rocks is still very real, avalanches are not the only hazard out there right now. The other thing that comes to mind right now is with a thin and early season snowpack it is wise to be a little conservative in your terrain selection. Getting rolled in an avalanche is always bad, but it can be much worse in low snowpack conditions as you are likely to get scraped over the ground. Trauma is a very likely reality in early season avalanches.

Regioni coperte