Bollettino valanghe

Salmon River Mountains

Payette Avalanche Center
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Pericolo valanghe

Alta quota
3 · Marcato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
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In sintesi

Strong winds and recent snowfall this week have built wind slabs 1-2 feet thick. Today, strong NW winds will continue to load east-facing slopes. Wind slabs will be deepest and most reactive above 7,500 feet, especially on east-facing terrain. You can find safer conditions in wind-sheltered terrain, down and away from exposed ridgelines.

Problemi valanghivi

  • Wind Slabs

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

    There is ample snow available for transport at middle and upper elevations, and the winds have been at work. We've had steady, strong winds for several days, keeping slopes at upper elevations primed for wind slab activity. This week, above 7,000 feet, some mountain locations have received 20-30 inches of snowfall. Our most recent storm (past 24 hours) delivered 10-12 inches of snow (1-1.5" SWE). Winds were gusting over 40 MPH yesterday, out of the W/SW. Today, winds have shifted out of the NW and will continue to gust 30-40 MPH.

    Pay attention to red flags like active wind-loading, shooting cracks from your skis, board, or sled, recent avalanche activity, or collapsing or whumpfing. If you're seeing signs of instability, back off steep slopes and/or find a different aspect that is not wind-loaded. You can find more stable conditions in terrain away from steep, wind-loaded slopes (i.e., lower-angled, wind-sheltered slopes away from exposed ridgelines).

    (12/23/2025)

    North Bruin with plumes of snow from SW winds transporting recent storm snow

    Photo: Kevin Studley

Avalanche Discussion

Our holiday week has finally delivered some colder air and lowered rain/snow levels down to valley floors. This week, the mountains picked up 5-6 inches of snow water equivalent. Below ~6,500 feet, it was mostly in liquid form. At lower elevations, there remains very little snow to create avalanches (particularly on West Mountain). With a week of warm, wet weather and lots of new snow and wind, I would continue to play it safe today. All this moisture will be helping to heal any buried, persistent weak layers. This process takes time, and change is much more gradual beneath the snow surface. Our mountain snowpack remains far below normal for this time of year. Plenty of obstacles are still lurking just beneath recent snowfall. Off-trail travel remains challenging to nearly impossible, depending on elevation. 

If you're out in the mountains, submit an online observation HERE. Even simple snow and weather observations help forecasters create a more reliable forecast for the public (YOU).

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