Bollettino valanghe

Mount Shasta

Mount Shasta Avalanche Center
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Pericolo valanghe

Wed
Alta quota
3 · Marcato
Limite del bosco
3 · Marcato
Sotto il limite
2 · Moderato
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Non aggiornato — questo bollettino è scaduto 5 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Dangerous avalanche conditions exist. Natural avalanches are possible and human-triggered avalanches are likely. Don't be under or on slopes greater than 30 degrees.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1–2.5

    The forecast zone has received 30-35" of snow since Saturday afternoon. Moderate to strong westerly winds have, and will continue to build slabs on leeward slopes. These slabs can be denser than the storm snow and shaped like lenses or pillows. In above treeline areas that still have old snow, bonding of new to old snow will be weak. Dense slabs could sit atop low density snow.

    Cornices are indicators of wind-loaded slopes. Shooting cracks and hollow, drum-like sounding snow are also indicators of wind-slabs. Avoid these slopes today, and any terrain that is underneath them. Natural avalanches are possible and human triggered avalanches are likely.

    Evaluate the snowpack carefully and be conservative when traveling in or near avalanche terrain.

  • Storm Slabs

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

    Storm slabs are short lived, but may still linger today. They occur when a soft cohesive layer (a slab) of new snow breaks within the storm snow or on the old snow surface. Be wary of steep slopes in wind sheltered areas greater than 35 degrees. The chutes on Gray Butte are often where this problem manifests.

Avalanche Discussion

We've received a lot of snow in the last 36 hours. Today is not a good day to venture into the alpine without careful snowpack evaluation. Don't ski too hard near and below treeline. Plenty of hidden obstacles lurk within the new snow.

We'll give you an update on the status of the Everitt Memorial Highway and Castle Lake Road closures by mid-morning.

Regioni coperte