Lawinenlagebericht

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Wallowa Avalanche Center
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Fri
Hochgebirge
1 · Gering
Waldgrenze
1 · Gering
Unterhalb
2 · Mässig
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Kernpunkte

Small wet loose avalanches are possible below treeline.  If you are seeing signs of wet loose snow such as point releases, pinwheels, or a wet snow surface- avoid terrain steeper than 35 degrees especially where it may be above a terrain trap such as a cliff, gully, or trees.

Lawinenprobleme

  • Loose Wet

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

    Overnight temperatures at most stations throughout the forecast area remained at or above freezing.  Small wet loose avalanches will be possible throughout the day at lower elevations, especially if the expected precipitation falls as rain or wet snow in those areas.  Wet Loose avalanches can start as a small point release from a trigger such as a snow falling off a tree, an animal running through a steep rocky area, or a rider cutting across a steep rollover.  (see photo from last week's warmup).  They generally fan out and entrain chunks of wet snow.  While they move slower than dry avalanches, they can easily push a rider into consequential terrain.  If seeing signs of wet loose avalanches such as a wet snow surface, pinwheels, or point releases avoid terrain steeper than 35 degrees above terrain traps.  As temperatures cool throughout the afternoon, the chances of wet loose avalanches will decresase. 

    (1/5/2022)

    This photo was taken during the warmup last week.  Surface snow is warm and wet at this location, has started a point release given the steep slope angle.  Point releases and pinwheels are telltale signs of wet loose avalanche activity. 

    Photo: cm

Avalanche Discussion

Yesterday, observers at Spout Springs found an average height of snow (HS) of 140 cm (4.5ft) of snow.  In previously wind loaded areas, the snow depth was closer to 200 cm (6.5 feet).   There was a thin breakable crust over all aspects and elevations observed.  Rain runnels were evident over steeper slopes where free water from the warm rain event last week had channeled throughout the upper layers of the snowpack.   There was about 10" of damp snow under the thin surface crust.  Under that is where I believe most of the water drained to. There was a crust that was about 3" thick.  The snowpack below this consisted of consolidated strong snow with a variety of crusts in between these layers.  We will continue to track the 1/6 Rain crust as well as other crust interfaces within this snowpack.  

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