Bollettino valanghe

Central Sierra Nevada

Sierra Avalanche Center
Vedi sulla mappa

Pericolo valanghe

Alta quota
1 · Debole
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
Open full map
Non aggiornato — questo bollettino è scaduto 7 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Refrozen surfaces may take longer to soften today because of cooler temperatures and NE winds. Significant loose wet instabilities should remain unlikely. Careful timing and terrain selection can help find softer snow and avoid firm snow surfaces where long sliding falls could occur. The avalanche danger will remain LOW. 

Problemi valanghivi

  • Cornices

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

    Lows in the 20's and less cloud cover during the night should have allowed for a solid overnight refreeze. Today, widespread sunshine will work to melt the refreeze while slightly cooler temperatures and NE winds will work to keep the snow surfaces cool. On lower elevation, wind-protected E-SE-S-SW-W aspects, the warming side should have the advantage and the snow surface could soften by midday. On more wind-exposed upper elevation slopes, the balance may remain tipped toward cooling and surfaces could remain mostly firm today. Sizable loose wet instabilities remain unlikely. 

    Firm and variable conditions with many exposed obstacles present hazards like long sliding falls and collisions with immovable objects. Terrain selection and careful timing can lead your group to softer more enjoyable snow. If conditions don't match your group's skills and equipment, wait for the snow to soften, move to a different slope, or even retreat to a different activity. 

Avalanche Discussion

* Spring-like melt-freeze conditions exist on sun-exposed E-SE-S-SW-W aspects.

* NW-N-NE aspects hold variable conditions with mostly firm surfaces on near and above treeline slopes and breakable crust with isolated pockets of softer snow on wind-protected below treeline slopes. Yesterday observers also reported wet sticky snow on some lower elevation northerly aspects.

* No reports of new loose wet avalanches have been received this week.

Regioni coperte