Bollettino valanghe

West Slopes Central

Northwest Avalanche Center
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Pericolo valanghe

Wed
Alta quota
4 · Forte
Limite del bosco
3 · Marcato
Sotto il limite
3 · Marcato
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Non aggiornato — questo bollettino è scaduto 8 months ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Stormy conditions will build throughout the morning, bringing increasing snowfall, wind, and poor visibility. Stick to simple, sheltered, low-angle terrain and minimize exposure to large slopes overhead as conditions deteriorate.

Problemi valanghivi

  • Storm Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Very Likely
    Dimensione
    1.5–2.5

    West Central should be among the first forecast zones to see heavy snowfall, with fresh slabs forming quickly and becoming increasingly reactive throughout the morning. The greatest hazard will be in wind-loaded terrain, but look for slab or loose-snow instabilities in wind-sheltered areas as well. A subtle rise in temperatures could further increase reactivity.

    Test slopes and hand pits can help assess how well the new snow is bonding, but stormy weather may keep you confined to small, low-angle terrain regardless of what you find. Don’t ignore obvious red flags like long shooting cracks or recent avalanche activity.

    Avalanche danger may escalate quickly. If you find touchy slabs or observe natural avalanche activity, assume HIGH danger and avoid avalanche terrain at all elevations.

    (2/8/2023)

    Small slabs on small slopes mean you will probably get a larger slab on a bigger slope

    Photo: Adam Ü

Avalanche Discussion

Snowfall tapered off during the day Monday, with occasional clearing farther south in the Cascades. The White Chuck Tripod picked up another 7 inches overnight into the day, bringing totals to around 16 inches since Saturday morning. This is similar to West North and a bit more than Stevens Pass and Snoqualmie Pass, which each added about 10 inches over the same period.

Backcountry observers in West North reported better stability on Monday compared to the day prior when numerous  - but small - human triggered avalanches were reported. The day-old slabs were largely unreactive, with loose snow sluffing the primary concern in steep terrain. Riding conditions were reported to be quite good. Wind slabs were also reported as a non-issue at both passes. As of early Monday evening, no observations were received from upper-elevation, alpine terrain. Wet avalanche problems have diminished for the time being with lower temperatures and an end to low elevation rainfall.

Regioni coperte