Bollettino valanghe

Selkirk Mountains

Idaho Panhandle Avalanche Center
Vedi sulla mappa

Pericolo valanghe

Wed
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
Open full map
Non aggiornato — questo bollettino è scaduto 4 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

New snow has been slowly collecting on the surface over the past couple of nights. Above 4500’, moderate SW winds have transported some of the snow, creating new wind slabs, primarily on leeward side of ridges. Stiff feeling snow underfoot, cracking in the snow or wind etching will be good signs that you’re in a wind effected area. Uncertainty surrounding the new wind slabs can be best managed through conservative terrain choices.

Problemi valanghivi

  • Wind Slabs

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

    New wind slabs should be expected on ridgelines and leeward slopes. With such light snow on the surface, it doesn’t take a lot of wind to displace it. Expect to see continued loading on SE-E-NE-N slopes. Conservative terrain choices near ridges will be the best way to manage any uncertainty with the new wind slabs.

    (1/23/2023)

    New wind etching at 5500' / SW face

    Devils, creek, Selkirks

    Photo: J Thompson

  • Persistent Slabs

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

    Temperatures recently have been cold enough to preserve the snow near and above treeline making for some great sliding conditions! It doesn’t look like temperatures today will get high enough to worry about the snow on the surface slabbing up, but that is the big potential snowpack change that we’re keeping our eyes on. If the snow on the surface does start to turn into a cohesive slab, then we’ll be more concerned about the interface with the Lucky Friday crust layer underneath. Overall, the Lucky Friday crust is supportable. Stability tests aren’t showing a likelihood to failure.

     

    (1/23/2023) Photo: J. Thompson

Regioni coperte