Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 1–2
Avalanche forecast
View on mapNorthern San Juan
Colorado Avalanche Information Center
Avalanche danger
Sat
Sun
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
Out of date — this forecast expired 2 years ago. You’re viewing past conditions, not the current bulletin.
Avalanche problems
Avalanche Summary
You can trigger avalanches on many slopes at all elevations. The most dangerous slopes are at upper elevations where dense, cohesive slabs of snow formed above widespread weak layers. Avalanches here could break deeper and wider than expected, and you can trigger them from a distance. Safe travel requires giving many slopes steeper than about 30 degrees wide buffers.
Cracking and collapsing are signs of an unstable slope and an indication to move to lower-angle terrain. Be aware that you may not observe these signs of instability before triggering an avalanche.