Avalanche forecast

Central Cascades

Central Oregon Avalanche Center
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Avalanche danger

Mon
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
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Highlights

For Sunday human triggered avalanches will be possible. With new snow in the forecast and snow available for transport, wind slabs could form on lee aspects near and above treeline. As you travel, look for visual clues of slab formation and any signs of instabilities (such as recent avalanches, blowing snow, and cracking). If in doubt, stick to slopes lower than 30 degrees.

Avalanche problems

  • Wind Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Possible
    Size
    1–1.5

    On Saturday I observed a very small human triggered wind slab on steep east facing terrain near treeline. For Sunday I would suspect small slabs on specific features and larger wind slabs will be possible on isolated slopes. As always assess for terrain traps such as gulleys, trees, cliffs, creeks etc and make conservative riding choices.

    With 2-4" of new snow in the forecast fresh wind slabs will be possible near and above treeline on northerly, easterly and southeasterly slopes. While traveling always be on the lookout for signs of wind slabs such as pillow-like features, wind textured surfaces, and hollow like snow. Wind slabs often form below ridgelines and terrain features that collect snow. Use safe test slopes to assess for signs of instabilities such as cracking or small wind slabs. If in doubt seek lower angle terrain.

Avalanche Discussion

In the past few days we have had reports of large human triggered wind slabs in open forest (previously burned zones) at lower elevations. Think of these burn areas as near treeline elevation, as the winds can freely move snow through it and load steep slopes. As always be mindful of the terrain features even in lower elevations.

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