Wind Slabs
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–2
Winds will continue throughout the day transporting snow to NW-N-NE slopes forming slabs on exposed terrain. As these winds continue to transport snow the avalanche danger has increased and it will be likely to trigger a wind slab. Winds in the Southern Wallowas are forested between 14-33 mph with gusts up to 37 mph out of the southwest. The winds in the Elkhorns are forecasted between 15-25 mph with gusts up to 39 mph out of the south. Snow will continue to be transported to the northeast, north, and northwest slopes. Look for signs of wind loading on leeward terrain along ridgelines and cross-loaded mid-slope terrain features. Choose your terrain carefully before you commit to steep slopes if you see signs of wind loading, such as wind-moving snow, fresh cornices, drifts, and wind pillows.
(1/10/2023)
This photo was taken on a west facing terrain feature below treeline. The wind at this location was strong out of the southeast. The photo shows wind moving the snow, fresh cornice formation, and drifts and pillows on the leeward side of the ridge. These are all signs that windslabs are most likely present just down wind and down slope from the cornices.
Photo: TG