Bollettino valanghe

Stevens Pass

Northwest Avalanche Center
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Pericolo valanghe

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

In sintesi

Heavy snow and strong wind will bring the most dangerous avalanche conditions of the season, to date. Avalanches in the new snow could be large enough to bury or kill you, and they could run naturally from overhead terrain. The best way to stay safe is to stick to slopes less than 35 degrees.

Problemi valanghivi

  • Storm Slabs

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

    You will be able to trigger avalanches in the new snow on a variety of steep slopes. Use caution on all slopes over 35 degrees and avoid leeward sides of ridges and wind loaded features. It will be most dangerous above 5,000ft where more snow will accumulate and where westerly wind will drift deeper slabs of snow. We expect natural avalanches at upper elevations, some of which could be big enough to bury and kill you.

    Stay alert and observant for avalanches and signs of instability. Use small test slopes to asess the snowpack before comitting to larger terrain. Look for cracks shooting through the snow and snow that slides easily to show where you can trigger avalanche. If you see this, be ready to stick to lower-angle, well-supported slopes. 

Avalanche Discussion

Expect storm totals to approach 2 feet by the end of Sunday. Steven's Pass is favored with storm convergence bringing periods of heavy snow and strong winds. At the time of publishing, the heaviest snowfall is forecast to be Saturday night. However, a lot can change in 12 hours. If you experience periods during the day with snowfall rates of at least 1"/hour or sustained wind loading from moderate to strong winds, assume that you are dealing with very dangerous conditions that could deliver many large avalanches. 

Visibility and observations have been limited since the start of the storm on Friday night. It started off with rain and freezing rain which switched to snow Saturday afternoon. Stevens Pass patrol reported a handful of small wet loose avalanche in very steep terrain on Saturday.

Please let us know what you see in the mountains by submitting an observation. 

Regioni coperte