Avalanche forecast

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Northwest Avalanche Center
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Avalanche danger

Thu
Alpine
1 · Low
Treeline
1 · Low
Below
1 · Low
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Out of date — this forecast expired 6 years ago. You’re viewing past conditions, not the current bulletin.

Highlights

Light rain has caused conditions where you could potentially trigger small loose wet avalanches in very steep terrain. Look for signs of wet snow instability such as rollerballs and heavy, wet snow over dry snow. Expect challenging travel conditions with wet snow, or breakable crust.

Avalanche problems

  • Loose Wet

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Unlikely
    Size
    1

    Small wet loose avalanches may remain possible to trigger in isolated areas on Wednesday. The danger trend is on the decrease with cooling temperatures, though the snowpack will take some time to freeze up. If you get snow moving, it could entrain more wet snow as it runs downhill on steep (>35 degree) slopes. Avalanches will be more likely at mid and lower elevations and on sheltered slopes, steep slopes. Keep in mind what is above you if traveling under large slopes or rocky outcrops. 

    Watch for roller balls or wet snow that 'pushalanches' on test slopes as indicators of instability.  Expect challenging and potentially dangerous travel conditions with heavy wet, punchy snow that may turn into a breakable crust by day's end. 

    (11/22/2020) An example of loose wet avalanches in the Stevens Pass zone earlier this season

Avalanche Discussion

We don't have any direct observations from the area on Tuesday. Very little precipitation was recorded at the Washington Pass precip gauge, though warm temperatures and a shot of light rain likely melted the snow surfaces into wet snow.

Previously, observers reported widespread surface hoar and near surface faceting. If you get out, take note of whether the recent preciptation has melted away those weak grains or not. It seems likely that weak snow could stick around on slopes that are in the far eastern edge of the range. Previously lots of terrain had been getting skiied with no signs of instability, and lots of ski tracks could be seen in much of the bowls around Washington Pass. The snowpack remains shallow especially at lower elevations, and early season hazards such as rocks and creeks are plentiful. 

During the ongoing Covid-19 pandemic, continue to follow the latest guidance from local, state, and federal health officials. Avoid unnecessary risks that could impact first responders and stress medical resources.  Wear a mask when appropriate, practice social distancing, and consider recreating closer to home.

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