Lawinenlagebericht

East Slopes South

Northwest Avalanche Center
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Lawinengefahr

Fri
Hochgebirge
2 · Mässig
Waldgrenze
2 · Mässig
Unterhalb
1 · Gering
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Veraltet — dieser Lagebericht ist 4 years ago abgelaufen. Du siehst vergangene Verhältnisse, nicht den aktuellen Bericht.

Kernpunkte

It remains possible for you to trigger an avalanche in wind-drifted snow at middle and upper elevations.  The down-wind side of ridges, below cornices, and large slopes in the alpine are all possible spots you can trigger a slab avalanche. If you notice signs of unstable snow, avoid steep slopes in wind-drifted areas. 

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Possible
    Größe
    1–1.5

    Wednesday brought 1-2 inches of new snow accompanied by moderate SW winds. On Thursday, winds will switch more northwest and taper as the day progresses. This combination of new snow and moderate wind speeds have likely created shallow wind slabs above and near treeline.  That being said, a small avalanche can still be consequential in complex terrain. Be mindful of terrain traps such as rocks, creeks, and trees that could create a less- than-ideal outcome if you get caught. In some spots, these slabs may be easily to triggered  if they are sitting on a slick crust from mid January. 

    You will most likely find these wind slabs living on the lee-sides of ridges, beneath cornices, and on steep slopes in the alpine. 

    With better visibility on Thursday, be sure to use visual clues to help you identify wind-loaded terrain. Look for wind rippled snow, sharp cornices, and pillow-like slabs to help you identify slopes of concern. Avoid steep wind loaded slopes if you get shooting cracks under your feet or machine or notice recent avalanche activity. 

     

    (12/30/2022)

    Use visual clues to help you identify wind loaded slopes. In this case, cornices often are a great indicator of a wind drifted slope beneath. 

    Photo: Joe Dellaporta

Avalanche Discussion

Chances are you will encounter challenging travel conditions across the East-South.  You will likely find a few inches of snow sitting on the most recent 1/15 rain crust.  Having the proper gear such as traction may help you have a safer and more enjoyable day in the mountains.   At lower elevations, you may find shallow conditons with many hidden hazards present, like shallowly buried rocks or stumps.   

As we move forward this new snow sitting on the recent crust will be a layer worth watching. It could act as the perfect, slick bed surface for future avalanches to run on.  

If you get into the East-South, please let us know what you see by submitting a public observation! 

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