Avalanche forecast

Southern San Juan

Colorado Avalanche Information Center
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Avalanche danger

Mon
Tue
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
3 · Considerable
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Out of date — this forecast expired 3 years ago. You’re viewing past conditions, not the current bulletin.

Avalanche problems

  • Persistent Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Likely
    Size
    2–2.5

  • Storm Slabs

    • Alpine
    • Treeline
    • Below treeline
    Likelihood
    Very Likely
    Size
    1.5–2.5

Avalanche Summary

A Special Avalanche Advisory is in effect for the southern San Juan Mountains. New snow and winds through the holiday weekend will create dangerous avalanche conditions developing Saturday afternoon through Monday. Avalanche conditions will be more dangerous than we’ve experienced in weeks. Adjust your weekend plans accordingly, and check the forecast frequently for changing conditions.

Strong westerly winds and up to 8 inches of new snow overnight Saturday will continue to stress the overall weak snowpack. Sunday, avoid slopes steeper than about 30 degrees, especially those that appear firm or have a lens-shaped appearance. Fresh avalanches and signs of unstable snow, like shooting cracks or or collapses, indicate that the snowpack is unstable, and you should stick to recreating on mellow, low-angled slopes without steeper terrain above you.

Regions covered