Bollettino valanghe

Central Sierra Nevada

Sierra Avalanche Center
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Pericolo valanghe

Alta quota
1 · Debole
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
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Non aggiornato — questo bollettino è scaduto 13 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Avalanche danger is LOW for all elevations and aspects. Isolated areas of unstable wind slab may exist above treeline on N-NE aspects in complex or extreme terrain. Normal caution is advised.

Problemi valanghivi

  • Cornices

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

    Isolated areas of unstable wind slab may exist above treeline on N-NE aspects in complex or extreme terrain including unsupported slopes above cliff bands. Isolated areas of blowing snow yesterday may have allowed for isolated areas of new wind slab less than 1 foot thick to form above treeline on N-NE aspects. Human triggered avalanches are unlikely but not impossible today. Exercise normal caution and accepted best practice backcountry travel techniques in order to minimize risk.

Avalanche Discussion

Observations made yesterday on Tamarack Peak (Mount Rose backcountry), Rubicon Peak (West Shore Tahoe area), and on Thunder Mountain (Carson Pass area) all gave indications of good stability for the overall snowpack and wind slabs that formed last Saturday night and Sunday morning. A relative weak layer of lower density snow remains prominent just below the wind slab, but formal and informal tests indicate that propagation following a collapse of this weak layer is unlikely.

A new round of blowing snow was observed mid day yesterday on isolated above treeline peaks such as Dick's Peak in the Desolation Wilderness. This will have created some amount of new wind slab in isolated areas above treeline.

Regioni coperte