Boletín de aludes

Mt Hood

Northwest Avalanche Center
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Peligro de aludes

Fri
Alta montaña
3 · Notable
Límite del bosque
3 · Notable
Bajo el límite
3 · Notable
Desactualizado: este boletín caducó last year. Estás viendo condiciones pasadas, no el boletín vigente.

Lo esencial

Recent large to very large natural slab avalanches have occurred over the last few days. Even with a slow cooling trend, overlapping wet snow problems will linger into Thursday. Travel conservatively and avoid terrain with significant overhead hazards until the snowpack stabilizes. 

Problemas de aludes

  • Wet Slabs

    • Alta montaña
    • Límite del bosque
    • Bajo el límite del bosque
    Probabilidad
    Likely
    Tamaño
    2–3

    Over the past three days, observers have reported numerous large to very large wet slabs in the D2-D3.5 range, including a new one on Wednesday (see photo). Some of these slab avalanches broke widely across terrain features and ran far, reaching into lower elevations.  While cooler temperatures will arrive at upper elevations late Wednesday night,  this cooling trend is slow and lower and mid-elevations will likely stay above freezing for another 24 hours, maintaining the threat of wet snow avalanches.  

    Wet slabs are unpredictable so don't expect clear warning signs before they release.  If you're in terrain where the snowpack is wet and punchy,  wet loose avalanches remain possible on steep slopes. Until we see a thorough refreeze, keep your terrain selection simple by avoiding steep slopes with wet snow and limiting the time you spend under large terrain features. This includes the upper canyon run-outs that very large avalanches snake through every season. 

    Cornices are a real hazard right now and they could be great triggers for larger avalanches. Give these overhanging chunks of snow a wide buffer. Glide cracks tend to be more isolated around Mt Hood, but these can peel off rock slabs without warning. Don't linger under terrain with these cracks. 

    (3/26/2025)

    Another large (D2.5) wet slab that released in the last 12-24 hours in the lower White River Canyon. 

    WS-N-R3-D2.5-O / SE @ 5900 ft

    Photo: Joe Dellaporta

Avalanche Discussion

While the rain from the recent atmospheric river shut off on Monday, temperatures have been pegged well above freezing since Sunday morning and were downright tropical on Monday and Tuesday.  Besides a notable avalanche cycle documented below in the media gallery, this continued warmth has led to poor backcountry conditions and rapid snowpack settlement and melting.  The good news is that a return to cooler and eventually snowier weather is on the horizon later in the week.  

You can add to the forecast! Submit an observation here.

 

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