Bollettino valanghe

Seward and Lost Lake

Chugach National Forest Avalanche Center
Vedi sulla mappa

Pericolo valanghe

Wed
Alta quota
2 · Moderato
Limite del bosco
1 · Debole
Sotto il limite
1 · Debole
Open full map
Non aggiornato — questo bollettino è scaduto 2 years ago. Stai vedendo condizioni passate, non il bollettino in corso.

In sintesi

Moderate east winds will be creating fresh wind slabs up to 1.5’ deep above 2,500’. These may be forming over buried weak layers which will make them easier to trigger. Wind slabs can be found on steep wind loaded slopes below ridges and in loaded gullies. Below 2000’ wet loose avalanches will be easier to trigger on steep slopes where the snow is wet. Other hazards include glide avalanches releasing and cornice fall due to warmer temperatures and strong winds. 

Problemi valanghivi

  • Wind Slabs

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

    Moderate  ridge top winds (15-25 mph) from the east will be forming fresh wind slabs 1 to 1.5’ deep above 2,500’.. These will likely be forming on top of weak snow that formed during the past 2 weeks of clear, cold weather. This setup with a wind slab over weak layers will probably create slightly larger avalanches that will be a little easier to trigger than expected. 

    Wind slabs typically form below ridgelines, convex rolls, and in loaded gullies. Active wind loading, and recent avalanche activity indicates the snow is being stressed and capable of avalanching. Getting on small inconsequential slopes looking for shooting cracks beneath you or triggering a small slide are a great way to see how easy it could be to trigger a larger avalanche on bigger slopes.  Cornices will continue to grow today and may break off and trigger a wind slab avalanche above you. Consider spacing out and exposing one person at a time if you travel under a cornice. 

    It will be easy to trigger loose avalanches on steep slopes. There were reports of wet loose avalanches seen below 2,000’. Above the freezing line where the snow is dryer, dry loose avalanches could be a problem in places protected by the wind. Both of these can entrain a lot of snow and carry someone off a cliff or into the trees.

    So many things to look out for today. Glide avalanches are making a comeback with new glide avalanches being reported almost every day including one yesterday on Seattle Ridge in Turnagain Pass. These avalanches can be huge so if you see a glide crack above you (looks like a brown frown), looking for ways around them is the safest option or move one at time past them.

Regioni coperte