Bulletin d’avalanche

Galena Summit & Eastern Mtns

Sawtooth Avalanche Center
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Danger d’avalanche

Tue
Alpin
1 · Faible
Limite forestière
1 · Faible
Sous la limite
1 · Faible
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Périmé — ce bulletin a expiré 5 years ago. Vous consultez des conditions passées, pas le bulletin en cours.

Points saillants

Today's combination of strong winds and new snow will build thin, stiff drifts in terrain exposed to the wind. In areas sheltered from the wind, generally stable avalanche conditions exist. There's a lingering chance of triggering a large, destructive slide in steep, rocky, wind-affected terrain. 

Problèmes avalancheux

  • Persistent Slabs

    • Alpin
    • Limite forestière
    • Sous la limite forestière
    Probabilité
    Unlikely
    Taille
    2–3

    The weak snow near the ground has shown little sign of improvement in many parts of this zone. With minimal loading over the past 3 weeks, triggering a large persistent slab avalanche has become unlikely. You'd have to be pretty unlucky to trigger a slide on this weak snow but is still worth keeping in mind. Many local professionals and experienced backcountry travelers are still choosing their terrain based on the presence of this snow, myself included. We are minimizing our exposure to terrain with the following characteristics: 

    • Steep: slopes steeper than about 35 degrees.
    • Rocky: slopes with variable snow cover due to the roughness of the terrain.
    • Wind-affected: slopes where strong winds produced variable snow cover.

Avalanche Discussion

In addition to the persistent slab problem described above, you'll be well-served to keep your eyes peeled for fresh wind slabs today. Today's weak storm will bring 1-3 inches of new snow and strong winds blowing out of the W/SW. This combination may build small but sensitive drifts in terrain exposed to the wind. Thanks to the strength of the wind, these drifts are likely to be relatively stiff. You may find them in atypical locations, such as in middle elevation terrain that is generally sheltered from the effects of the wind. Though these slabs will be small and isolated, they may be large enough to knock you off your feet and carry you through some unpleasant terrain. Be alert to the consequences of triggering one of these thin slabs if you are traveling in steep, rocky, treed terrain.

You can quickly catch up on what happened this past week in my latest Weekend Update video.

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