Persistent Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
Strong winds continue to drift snow across terrain features at upper elevations. The recent wind has varied snow depths across slopes and formed multiple weak layers in the upper snowpack. Previously drifted areas that face northerly and easterly are more likely to carry thicker slabs. You are more likely to impact these slabs and trigger an avalanche on slab margins. Slab margins exist near exposed rocks, on steep rollovers, and beneath ridges and cliffs.
Consider an alternative route if you notice the snow surface getting stiffer or if the snow surface looks smooth and rounded. You can find safer travel options on low-angled slopes sheltered from the wind without steep hazards above.