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 12 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Avalanche danger remains LOW for all elevations and aspects. Very small pockets of wet snow instability may form today in sun exposed areas that received new snow on Feb 22. Normal caution is advised.

Problemi valanghivi

  • Cornices

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

    Areas of shallow wet surface snow are expected to form today in response to daytime warming. Open, east wind exposed near and above treeline areas will be slow to soften today due to the cold start to the morning and moderate speed east winds. Natural and human triggered roller ball and pinwheel activity is possible today in the areas that received new snow on Feb 22. Any areas where human triggered loose wet instability occurs are expected to remain very small and not pose a significant threat to backcountry travelers. Otherwise, well established melt-freeze snow surface conditions exist. Many northerly aspects could remain frozen all day.

Avalanche Discussion

Observations made yesterday on Rubicon Peak (West Shore Tahoe area) revealed well established melt-freeze snow surface conditions on NW-N-NE aspects from the start of snow cover around 7,600' up to the summit around 9,000'. Isolated pockets of unconsolidated near surface facets composed the snow surface in a few spots, but were not representative of the vast majority of areas on the peak. No new snow from the Feb 22 event was observed in the area. Recent observations have shown that 1 to 3 inches of new snow was deposited in the eastern and southern portions of the forecast area on Feb 22. Otherwise, throughout the forecast area, a well consolidated and well bonded snowpack as been observed in all areas of snow cover.

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