Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
North wind remains the primary driver of avalanche hazard today. A person or snowmachine could still trigger a 1–2 foot deep wind slab on recently loaded slopes. Observations from March 17 found reactive test slopes on the lee side of terrain features in some areas. Continued moderate to strong north winds, combined with a trace of overnight snowfall, will continue to build wind slabs today.
Look for and avoid recently wind-loaded slopes. Wind slabs may appear smooth and rounded and can feel hollow or drum-like underfoot. There is also a low-probability chance that a wind slab avalanche could step down into a deeper weak layer (see Problem 2), producing a larger and more destructive avalanche.
(3/17/2026)
evample of a cross-loaded gully
Photo: Gareth Brown