Bollettino valanghe

Central Sierra Nevada

Sierra Avalanche Center
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Pericolo valanghe

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

In sintesi

NE winds are on the increase today, with some areas of blowing and drifting snow expected. Stiff, shallow slabs of wind drifted snow may form in isolated areas. In the big picture, avalanches remain unlikely on a regional scale.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Unlikely
    Dimensione
    1–1.5

    NE winds are increasing speed this morning following last night's cold front passage. Ridgetop gusts of 60+ mph today and 100+ mph this evening are expected to scour, lift, and drift any snow on the ground that remains available for transport. 

    Expect to encounter some amount of blowing and drifting snow today, especially near ridgetops. Look for the places where drifting snow is filling in and forming shallow slabs in downwind areas. These are the locations where isolated instability could exist today. Snow surface cracking is a sign of unstable wind slab in the immediate area.

    Any avalanches that are triggered today by backcountry travelers are expected to be small, with much of the consequences coming from being carried into or over down slope hazards such as rocks, trees, or cliffs.

    (1/10/2025)

    The mix of exposed rain crust (ice) and shallow wind slab that exists in many locations across the forecast area. This terrain is located between Carson Pass and Ebbetts Pass, CA.

    Photo: Sierra Avalanche Center

Avalanche Discussion

The recent strong to gale force winds scoured away snow from near and above treeline areas on a variety of aspects. This left behind a mix of wind-sculpted features and firm ice. If your travel plans take you into alpine terrain near exposed ridges, gullies, and open areas, expect to find variable snow surface conditions. Traveling in wind protected areas such as heavily forested slopes below treeline can help reduce exposure to today's avalanche problem. Softer, more consistent snow surface conditions linger on shaded slopes in wind protected areas.

Regioni coperte