Bollettino valanghe

Central Sierra Nevada

Sierra Avalanche Center
Vedi sulla mappa

Pericolo valanghe

Fri
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
Open full map
Non aggiornato — questo bollettino è scaduto 5 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Strong winds continue to create drifted areas of snow.  These wind slabs resulted in many avalanches yesterday throughout the forecast region.  Use caution near or below slopes where blowing snow or cornices are present.

Problemi valanghivi

  • Wind Slabs

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

    SW winds will increase again today transporting snow and creating areas of dense wind slabs.  Plenty of light, unconsolidated snow exists for strong SW winds forecasted today to move snow.  These wind slabs will form, or be building on wind slabs that formed yesterday, in open near and above treeline areas.  Cornices will continue to grow and build out and could be fragile.   

    Blowing snow, building cornices, and textured snow surfaces should help you figure out which slopes and terrain to avoid.  Wind slab avalanches were reactive yesterday and are expected to continue today and grow larger in size.  This avalanche problem does not exist in wind protected below treeline areas.    

    (12/29/2021)

    Natural wind slab avalanche on Hidden Peak, West Shore area, at 9,000.

    Photo: Liz Wigylus

Avalanche Discussion

* Natural and human triggered wind slab avalanches were reported throughout the forecast area yesterday in near and above treeline areas.  All of these avalanches reported were small D1 in size, with some crown lines up to 1 foot deep.

* Snowpack depths above 7000' are in the 10 to 16 + foot range!

Regioni coperte