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
Thu
Fri
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
2 · Moderate
Out of date — this forecast expired last year. You’re viewing past conditions, not the current bulletin.
Avalanche problems
Wind Slabs
NNEESESSWWNW- Alpine
- Treeline
- Below treeline
- Likelihood
- Likely
- Size
- 1–2
Avalanche Summary
Strong, gusty winds drift new and old snow at all elevations. You can trigger an avalanche where drifted snow forms cohesive slabs on steep slopes. Shooting cracks and hard-feeling snow underfoot or machine indicate you have found a slab of drifted snow.
You could also trigger an avalanche on buried weak layers 1-3 feet deep. The most dangerous slopes are where new winds drift snow above these shallow buried weak layers.
Additionally, watch out for overhanging cornices. They can break further back than expected and chunks of cornice falling on a slope may trigger a larger avalanche.