Bulletin d’avalanche

Elkhorns

Wallowa Avalanche Center
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Danger d’avalanche

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

Points saillants

Dangerous conditions exist at upper elevations and it's likely the additional weight of a rider would produce an avalanche.  Anywhere there's 8" of new snow or more it's advised you use conservative travel techniques as the new snow needs time to bond.  Only expose one person at a time to slopes >30 degrees, regroup out of runout zones, and if you observe cracking or collapsing ease off your slope angles.  

This forecast is sponsored by CB Construction in La Grande.  

Problèmes avalancheux

  • Storm Slabs

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

    It's likely at the upper elevations in the Wallowas and Elhorns you could trigger a storm slab today.  The likelihood for mid-elevation terrain depends on the amount of new snow, and how well it's bonded to the old snow surface.  If you find 8" of new snow or more then the likelihood of triggering an avalanche will increase.  Use safe travel protocols like only exposing one person at a time, avoiding terrain traps, and regrouping out of runout zones.  

    Anytime you experience cracking or collapsing Mother Nature is giving you a warning and you should look for lower-angle terrain to recreate in.  

     

    (11/29/2022) Photo: VM

Avalanche Discussion

Recent Observations:  Northern Wallowas, Southern Wallowas.  Please keep them coming!  

Weather Jan 2 till now:  Elevated snow levels brought warm and wet conditions to NE Oregon Jan 2-3.  Many of our local Snotel sites gained over 1" of SWE, but snow accumulation was light.  High Ridge in the Blues went from 15.3" to 16.5" of SWE, but snow totals only increased 5".  In the Elkhorns the Bourne Snotel went from 11.1" to 12.5" of SWE, but lost 2".  Schneider Meadows went from 24" to 27" but only reported gaining 3" of new snow.  Aneroid Snotel went from 10.3" to 11.1" and only gained 2" of snow.  

A general rule of thumb is 1" of SWE=12" of snow.  Hopefully, all of that water will help our drought situation.  

Régions couvertes