Bollettino valanghe

Elkhorns

Wallowa Avalanche Center
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Pericolo valanghe

Fri
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
2 · Moderato
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Non aggiornato — questo bollettino è scaduto 4 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Wet avalanches remain a concern on steep slopes on all aspects and elevations. Cornice fall hazard remains elevated and these features at ridgeline should be given wide berth. Avoid and stay out from underneath slopes > 35 degrees.

Problemi valanghivi

  • Loose Wet

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2

    Early in the week the Elkhorn and Wallowa mountain ranges received anywhere from .5" to 1" of water. This meant rain well into the alpine up to at least 8500'. There has been no hard freeze in our area mountains for the past four days. This has created a saturated upper snowpack and unstable conditions as a foot or more of heavy wet snow sits on top drier weaker snow. No hard freeze occurred last night and temperatures are expected to remain in the mid-30's throughout the day. Until we get a hard freeze, wet loose avalanches remain a concern at all elevations and aspects on slopes >35 degrees.

    Another concern is the possibility of triggering a wet loose avalanche and the weight of that debris triggering a deeper wet slab avalanche. In the Elkhorns and Wallowa Mountains, on protected north aspects at and below treeline, there are some weak layers buried anywhere from 1 to 2' deep. Take care to avoid steep slopes and areas in the terrain where a slab avalanche could be triggered like convex rolls, around rock outcroppings, and on unsupported slopes.

    Avoid and stay out from underneath steep slopes. If you see large pinwheels and roller balls coming off steep rocky slopes or sink in above your boot tops when you step off your skis, boards, or sled you should lower your slope angles.

    (3/2/2022)

    In the Shooting Gallery on north aspect at 5400'

    Photo: Killian

  • Cornices

    • Alta quota
    • Limite del bosco
    • Sotto il limite del bosco
    Probabilità
    Possible
    Dimensione
    1–2

    The recent rain event and warm temps have weakened cornices at and near ridgeline above treeline. Overhanging cornices should be given wide berth. They have a notorious tendency to break further back than anticipated. Make sure you are on solid ground by staying well to the windward side of ridges where vegetative clues like shrubs and trees can tell you terra firma exists below. Cornice fall will remain a problem until we get a solid freeze.

    (3/2/2022)

    Weak cornices exist due to recent rain event and warm temperatures. Give them wide birth.

    Photo: M. Hatch

Avalanche Discussion

Early in the week the Elkhorn and Wallowa mountain ranges received anywhere from .5" to 1" of water. This meant rain well into the alpine up to at least 8500'. There has been no hard freeze in our area mountains for the past four days. This has created a saturated upper snowpack and unstable conditions as a foot or more of heavy wet snow sits on top drier weaker snow. No hard freeze occurred last night and temperatures are expected to remain in the mid-30's throughout the day. Until we get a hard freeze, wet loose avalanches remain a concern at all elevations and aspects, and cornice fall remains a hazard along ridgelines at upper elevations.

Regioni coperte