Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 2–2.5
Avalanche forecast
View on mapNorthern San Juan
Colorado Avalanche Information Center
Avalanche danger
Sun
Mon
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
3 · Considerable
Out of date — this forecast expired 6 months ago. You’re viewing past conditions, not the current bulletin.
Avalanche problems
Wind Slabs
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–1.5
Avalanche Summary
A Special Avalanche Advisory is in effect for the northern San Juan Mountains. Feet of recent snow and strong winds have formed thick cohesive slabs above an unusually shallow and weak snowpack. Avalanche conditions will remain dangerous through the weekend. Careful planning and conservative terrain selection are essential for safe travel in backcountry avalanche terrain.
You can trigger an avalanche that fails on a buried weak layer over 3 feet deep in places. These avalanches will be large enough to bury or kill you. You may be able to trigger these avalanches from a distance or from below. Stick to slopes less than about 30 degrees that are not located beneath steep slopes for safer travel options.