Lawinenlagebericht

Blues

Wallowa Avalanche Center
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Lawinengefahr

Hochgebirge
3 · Erheblich
Waldgrenze
3 · Erheblich
Unterhalb
3 · Erheblich
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Kernpunkte

Copious amounts of new snow in the last 24 hours accompanied by moderate to strong west winds has created thick sensitive windslabs on leeward facing northeast, east, and southeast facing terrain. The likelihood of a recreationalist triggering a windslab avalanche on this leeward terrain steeper than 30 degrees is high. Therefore, it is recommended that riders stay and play on lower angle terrain where an abundance  of great snow awaits .

 

This forecast is sponsored by Trailhead Baker City

Lawinenprobleme

  • Wind Slabs

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–2

    Approximately 6" - 10" of new snow has fallen in the Blues during this most recent storm cycle that we are currently experiencing and another 2"-4" is forecasted for today as well. Also, winds last night and today were forecasted to be strong out out of the west. Therefore, expect windslab formation on upper elevation leeward facing north, northeast, east, and southeast facing terrain. These potentially thick windslabs could be poorly bonded to the firm crusty snow they rest upon. It is likely that a rider could trigger an avalanche on this terrain where slope angle exceeds 30 degrees. With an abundance of of good riding opportunities on lower angle terrain, it is advised that recreationalists stick to those lower angle slopes to be safe.

     

    (3/1/2023)

    Cracking on isolated features, common red flag while traveling on dangerous windslabs

     

    Photo: Nick Burks

  • Loose Dry

    • Hochgebirge
    • Waldgrenze
    • Unterhalb der Waldgrenze
    Wahrscheinlichkeit
    Likely
    Größe
    1–2

    Yesterday afternoon I ski toured the Northern Elkhorns. There was about 8" - 10" of new snow that has accumulated since Monday, undisturbed by wind. These conditions existed between 7500' all the way up to the ridgeline at 8600' . I was able to trigger numerous small loose dry avalanches on safe test slopes steeper than 35 degrees. In the Blue mountains I think it will be likely that a skier or rider will be able to trigger a loose dry avalanche today on steep slopes that remain undisturbed by wind. Most likely locations would include steep wind sheltered areas below treeline, especially solar aspects that harbor  melt freeze crusts. These slick crusts that exist on south facing slopes and lower elevation terrain don't bond well to new snow, therefore making them great sliding surfaces for avalanches to run on. Even though loose dry avalanches are generally considered less dangerous than slab avalanches, they are dangerous enough to carry a person into and through trees, rocks, and over cliff bands. A loose dry avalanche can also carry a rider into a gully where deep burial is possible. Consider the consequences before committing to that steep slope today. Also consider recreating on low angle slopes where an abundance of great riding opportunities await.

    (3/23/2023)

    Small skier triggered test slope avalanche in the Northern Elkhorns. I was able to consistently produce small loose dry avalanches on similar steep test slopes throughout my tour on Thursday.

    Photo: TG

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