Bulletin d’avalanche

East Slopes North

Northwest Avalanche Center
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Danger d’avalanche

Fri
Alpin
3 · Marqué
Limite forestière
3 · Marqué
Sous la limite
2 · Modéré
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Périmé — ce bulletin a expiré 8 months ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

On Thursday, light snow and strong winds will make it easy to trigger avalanches at middle and upper elevations. Use caution on steep slopes where the wind is depositing snow, and steer around drifts and thick pillows of snow. If you see fresh avalanches, stick to slopes less than 35 degrees.

Problèmes avalancheux

  • Wind Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Likely
    Taille
    1–2

    Strong winds and blowing snow will drive dangerous avalanche conditions. Wind-loaded slopes near ridgelines and exposed terrain will be the day's most avalanche-prone locations. Avoid steep terrain and convex rollovers in wind-affected areas. Instead, stick to low-angle forested slopes as your safest option. Be aware of cornices. Don't walk out onto them or linger under them.

    (1/6/2026)

    A small (D1) storm slab avalanche, intentionally triggered involving all of the new snow. Middle elevation, S, Cutthroat Creek 

    Photo: Adam Butterfield

  • Loose Dry

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Possible
    Taille
    1–1.5

    There's plenty of light, dry snow on a variety of slopes. In very steep terrain, surface snow could sluff off as a loose avalanche. Use caution where avalanches can push you into rocks or off cliffs. 

    (11/30/2025)

    An example of loose avalanches on the southwest face of Tower Mtn. Point release avalanches (likely loose dry) in the foreground (right side) may've occurred on 11/28. SW, 7,000ft

    Photo: Joe Dellaporta

Avalanche Discussion

Light snow will continue into Thursday. Temperatures will remain cold with low snow levels. Westerly winds will increase in the second half of the day.

On Wednesday, numerous small loose dry avalanches were reported in very steep terrain. On Tuesday, observers in the Cutthroat Creek area reported 8 inches of new snow. They triggered a number of small (D1) avalanches on test slopes (both wind-exposed and sheltered) involving all of the new snow. Winds were strong near ridge tops and actively transporting snow.

Observers on Monday reported triggering small wind slabs near ridgelines. These avalanches were breaking on a storm interface buried 1-1.5' deep. Over the weekend, an observer found buried surface hoar in the Cutthroat drainage. We think this persistent weak layer is inconsistent and isolated. No matter where you are, it's worth sticking your shovel in the snow to see if it exists 1.5-2' below the snow surface.  An observer near Mt. Tiffany also reported whumpfing collapses earlier last week, a potential sign of buried, persistent weak layers. 

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