Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1.5–2.5
The most dangerous slopes are easterly-facing slopes at upper elevations in the Gore Range. Strong winds drifted recent snow into a cohesive slab that rests on a weak layer buried about two to four feet deep. Before triggering a large avalanche, you may not see or hear signs of unstable snow like cracking or collapsing. Seek wind-sheltered slopes less than about 30 degrees for safer travel options.
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