Bollettino valanghe

Snoqualmie Pass

Northwest Avalanche Center
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2 · Moderato
Limite del bosco
1 · Debole
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1 · Debole
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In sintesi

A couple of inches of new snow in the afternoon could start to build small wind-loaded pockets higher in the terrain. Blowing snow and textured surfaces should help you easily identify where these spots might exist.

Problemi valanghivi

  • Wind Slabs

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1

    You may see a wind slab problem start to develop Sunday afternoon once a few inches of snow is available to blow around. Fortunately, these slabs should be rather small, shallow, and easy to anticipate. If your plans call for traveling near exposed ridgelines or close to some of the Pass’s summits, expect to find pillow-like slabs on the downwind side of features. Even though they should be pretty small, don’t let one of these tiny avalanches knock you over in steep terrain.

    (2/18/2023)

    Signs of wind loading to look for Sunday.

    Photo: Dallas Glass

Avalanche Discussion

First thing Sunday morning, you may find generally safe avalanche conditions around the Pass. Punchy wet snow, breakable crusts, icy slopes, and old piles of avalanche debris should be the norm. With southerly flow, this storm doesn’t really favor the Snoqualmie area. As a result, the modest precipitation during the day should help limit the hazard. 

Near and below the rain-snow line, you may find that the snow surfaces become a bit wet and sticky. We think at these lower elevations the snowpack will easily handle this little bit of rain. However, on very steep slopes, where you find wet mushy snow, you may be able to push a small loose avalanche. This will be most likely near rocky areas. Don’t let one of these very small slides carry you over a cliff. 

Even though we had a bit of spring weather this past week, below a thick layer of melt-forms the snowpack is still winter-like. As it continues its transition to spring, you may encounter isolated large “shed” style avalanches (glide, cornice, wet slab). On Sunday, these types of avalanches would be most likely at lower elevations. However, it's just good practice to not hang out in the runouts of large avalanche paths, especially if you see looming cornices or crevasse-like glide cracks on the slopes above. 

This is the last avalanche forecast for the 22/23 season. NWAC will continue issuing mountain weather forecasts each afternoon at 2:30 pm through April. We’d like to thank each of you for reading and using these forecasts to make informed safe decisions and for contributing to your community by submitting observations. Please continue to help support your backcountry friends by letting others know what you find in the mountains. Have a wonderful spring and summer! ~Dallas and Andy

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