Avalanche forecast

Southern San Juan

Dec 1 – 2, 2025Colorado Avalanche Information Center
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Archived · expired 10 months ago

Avalanche danger

Wed
Thu
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low

Avalanche problems

  • Persistent Slabs

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

Avalanche Summary

You could trigger an avalanche where Sunday’s storm formed new slabs over weak snow on steep shady slopes near and above treeline. The most concerning spots are where you find old, stiff, wind-drifted snow sitting above weak snow near the ground, because this means you could trigger a larger avalanche that fails deeper in the snowpack. You could also trigger an avalanche from a distance.

Move to lower-angled terrain or sunnier slopes if you experience any cracking or collapsing underneath you.

Regions covered