Bollettino valanghe

Mount Shasta

Mount Shasta Avalanche Center
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Pericolo valanghe

Sat
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato
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Non aggiornato — questo bollettino è scaduto 4 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Unsettled weather will continue for northern California. Fluctuating temperatures, precipitation and wind speeds can make storm snow layering interesting. Unstable snow may exist in steep avalanche terrain. It will be up to you to look for signs of instability today. New snow and wind are good ingredients for slab avalanches. Watch out for signs of unstable snow like recent avalanches, blowing snow and cracking snow. Move to lower angle terrain if there is any doubt about the snow stability.

Problemi valanghivi

  • Wind Slabs

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

    Observations have been limited from upper elevation, windy terrain, but the data doesn't lie: westerly wind has been predominate, and paired with ample amounts of new snow. Today, it will be windy over higher terrain. Expect wind blowing snow onto those leeward aspects on the right half of the compass. Wind slabs are most reactive during or just after a storm. Ease into terrain by checking wind loading on lower angle, small test slopes. As drifts becoming deeper and slopes larger, resulting avalanches can become much more serious. Monitor the depth of wind slabs and look for signs of unstable snow such as cracking in the slab or recent avalanches.

  • Storm Slabs

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

    Fluctuations in temperature, wind and precipitation can create density changes and weak layers in the snowpack. Warming temperatures over the past 24 hours will make for heavy snow on top of light snow, the classic upside down cake effect. While most of the bonding in the upper snowpack is expected to improve, storm slabs could still be possible in steep, unsupported terrain. Wet snow instabilities will begin to occur as temperatures increase and rain begins to fall on new snow.

    Look for signs of instability while traveling in the backcountry.  Recent avalanche activity, shooting cracks, collapsing, and rapid warming.  If you see signs of instability, move away from avalanche terrain into less steep and easier to manage terrain.

Regioni coperte