Bollettino valanghe

Mt Hood

Northwest Avalanche Center
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Pericolo valanghe

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

In sintesi

 Dangerous avalanche conditions are expected on Monday as temperatures rise and rain continues to fall. You may see wet avalanches of all types, so the best policy will be to simply avoid traveling on steep slopes and limit your time spent under large avalanche paths. 

Problemi valanghivi

  • Wet Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Likely
    Dimensione
    1.5–3

    As temperatures continue to rise and rain percolates deeper in the snowpack, the likelihood of seeing wet slabs increases, especially in areas that hold a dry snowpack still (such as the alpine). These warm temperatures may also set the stage for other wet avalanche problem types, such as wet loose slides and cornices falls. 

    Overlapping avalanche problems and a wet weather forecast will make for a dangerous day and should help keep your terrain selection simple. Your best bet will be to avoid traveling or under all steep slopes, especially if you notice a sloppy, unsupportive snowpack. At lower elevations, especially in canyons, it may be a wise idea to avoid terrain features that you suspect could funnel avalanche debris of very large avalanches from the upper mountain.

    (1/14/2023)

    You could see similar sized (or bigger) wet slides on Monday. 

    Photo: Irene Henninger

Avalanche Discussion

The Mt Hood zone is looking at over 1 inch of rain in the next 24 hours. At mid and lower elevations rain will fall on an already wet and variable snowpack. However, at upper elevations (above 7000 ft) rain will start falling on a drier snowpack. Snow typically doesn’t like rapid change, so we’re uncertain how this upper elevation snowpack will respond to the warm up and rain. With uncertainty, the best policy will be to increase your safety margins by sticking to mellow slopes or better yet, finding alternatives to mountain travel for the day. 

On Sunday my partner and I rode our sleds in the Lookout Mountain area. At lower elevations we found a wet and shrinking snowpack. Unsurprisingly, near ridgetop at 6000 ft we found a deeper and more layered snowpack. At this elevation, the crust just started breaking down by mid-day. It was still supportable on skis, but it wasn’t for our boots and sled. By this point the top 6 inches of the upper snowpack was already wet and getting weaker. 

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