Storm Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Very Likely
- Size
- 1–2.5
New snow is falling on either facets or old hard wind affected snow. It is likely that this new snow will not stick well to the old surface.
Avalanche forecast
View on mapYukon
Dec 28 – 29, 2025Avalanche Canada
Archived · expired 9 months ago
Avalanche danger
Tue
Wed
Alpine
3 · Considerable
Treeline
3 · Considerable
Below
No rating
Highlights
New snow falling won't stick to the old cold snow surface well.
If there is more than 30 cm of new snow where you are treat the hazard as HIGH.
Avalanche problems
Confidence
Moderate
- Uncertainty is due to the timing, track, & intensity of the incoming weather system.
- Uncertainty is due to the limited number of field observations.
Avalanche Summary
Observations are limited due to extreme cold. The most recent avalanche observation was a size 2 wind slab which occurred on a south aspect near Tutshi Lake on Monday. Given the cold temperatures, ongoing wind, and lack of recent observations, it is best to assume wind slabs may still be lingering in leeward terrain features in wind-affected terrain.
Snowpack Summary
Up to 30 cm of new snow is now sitting on a heavily wind affected and faceted upper snowpack.
Snowpack depths vary widely due to wind, but average around 130 cm across the region.
Weather Summary
Saturday Night
Cloudy. 15 cm of snow. 10 km/h south ridgetop wind. Treeline temperature -21 °C.
Sunday
Cloudy. 20 cm of snow. 10 km/h southeast ridgetop wind. Treeline temperature -26 °C.
Monday
Mostly cloudy. 10 to 15 cm of snow. 20 km/h southeast ridgetop wind. Treeline temperature -24 °C.
Tuesday
Mostly cloudy. 15 to 20 cm of snow. 10 km/h southeast ridgetop wind. Treeline temperature -17 °C.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Watch for areas of hard wind slab on alpine features.
- Use ridges or ribs to avoid areas of wind-loaded snow.