Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 2–2.5
Avalanche forecast
View on mapNorthern San Juan
Colorado Avalanche Information Center
Avalanche danger
Sun
Mon
Alpine
2 · Moderate
Treeline
2 · Moderate
Below
1 · Low
Out of date — this forecast expired 2 years ago. You’re viewing past conditions, not the current bulletin.
Avalanche problems
Storm Slabs
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
Avalanche Summary
Wind-loaded slopes and terrain features near and above treeline are the most problematic. This is where winds drifted recent snowfall into varying thickness slabs above weak, collapsible snow layers. Avalanches in recent storm snow may break deeper where older, weak layers are closer to the surface – slab margins, near exposed rocks and trees, and on steep rollovers. Move to lower angle slopes if the snow surface gets stiffer, or you see cracking in the snow – especially if the snow surface looks smooth and rounded. Safer travel options exists below treeline.
Sun and warming temperatures may trigger sluffing of the new snow on steep, sunny slopes at upper elevations.