Bollettino valanghe

Seward and Lost Lake

Chugach National Forest Avalanche Center
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Pericolo valanghe

Sun
Alta quota
2 · Moderato
Limite del bosco
2 · Moderato
Sotto il limite
1 · Debole
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In sintesi

The biggest concern is triggering a wind slab avalanche up to 2’ deep above 2000’. These may be larger where more snow fell and easier to trigger if they are sitting over a buried weak layer. We recommend assessing snowpack stability as these layers may be hard to find and surprise you on steep wind loaded slopes. There is a chance of human triggered wet loose avalanches below 1500’ and dry loose avalanches on steep slopes in the alpine. Try to avoid traveling under glide cracks as they can release as glide avalanches and be large and destructive. 

SPECIAL ANNOUNCEMENTS:

Free avalanche outreach events next week on the Kenai Peninsula!

Wednesday, Feb. 26 at the Kenai River Brewery in Solodotna from 6:00 to 7:00 pm - Join forecaster Daniel Krueger to talk about the state of the snowpacks and useful backcountry tips and tricks. More info here.Thursday, Feb. 27 at the Breeze Inn Hotel in Seward from 6:00 to 7:30 pm. Join forecaster Mik Dalpes to talk about the state of the snowpacks, mapping resources, and how to interpret stability tests. More info here.

Problemi valanghivi

  • Wind Slabs

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

    Wind slab avalanches 1 to 2’ deep will be easier to trigger on steep wind loaded slopes above 2000’. An observation yesterday in Turnagain Pass reported both natural and ski triggered avalanches 6 to 12” deep. Similar conditions exist in Lost Lake and Seward. Some areas may have received a bit more snow closer to the coast and at higher elevations. On some slopes there may be a wind slab sitting over a layer of buried surface hoar or facets that will make these easier to trigger. What will be tricky today is locating and avoiding terrain with "more reactive" weak layers. Traveling tests may produce stable results but the slope you ride may have pockets of weak layers that are hard to find. Recent avalanches are great clues as well as taking the time to conduct more traveling tests such as hand shear tests and testing small, safe slopes to see if they create an avalanche. Utilizing safe zones and exposing one person at a time on a slope will increase your margin of safety.  

    Above freezing temperatures and rain will make it easy to trigger a wet loose avalanche below 1000’. A group on Tincan triggered wet loose avalanches yesterday in the trees. Watch out for these as they can carry someone over a cliff or into trees. Dry loose avalanches may sweep you off your feet in steep wind sheltered terrrain.

    Glide Avalanches: Warm springlike temperatures typically increase glide avalanche activity. We have seen some glide cracks slowly opening on the south end of Seattle Ridge. Keep your head up as you move through valleys and try to avoid spending time under these whenever possible. 

    Cornices: Cornices have grown very large on some ridgetops in the forecast zone. Recent winds, new snow, and warm temps will be making these more sensitive to trigger. Avoid traveling under cornices and be mindful of them if you find yourself on a ridge today.

Regioni coperte