Wind Slabs
N
NE
E
SE
S
SW
W
NW
- Alpine
- Treeline
- Below treeline
- Likelihood
- Possible
- Size
- 1–1.5
Small wind slabs may be found in lee terrain features in the high alpine.
Avalanche forecast
View on mapMicrowave-Sinclair
Apr 22 – 23, 2025Avalanche Canada
Archived · expired last year
Avalanche danger
Thu
Fri
Alpine
2 · Moderate
Treeline
1 · Low
Below
1 · Low
Highlights
Assess for slabs in the high alpine before committing to consequential terrain.
Avalanche problems
Confidence
Moderate
Avalanche Summary
We haven't received any recent reports of avalanche activity.
Please consider sharing your observations to the Mountain Information Network.
Snowpack Summary
A dusting of snow will fall onto a widespread hard melt-freeze crust that is found everywhere except high-elevation northerly aspects, where soft snow may exist. Small wind slabs may be found on northerly alpine slopes from southwest wind.
Two weak layers that formed in February and March are found in the middle of the snowpack. These layers are currently dormant, but they could be triggered with a large load such as a cornice fall.
Weather Summary
Tuesday Night
Cloudy with 1 to 3 cm of snow. 20 to 40 km/h west ridgetop wind. Treeline temperature -2 °C. Freezing level 1100 m.
Wednesday
Mostly cloudy with 0 to 1 cm of snow. 10 to 20 km/h southwest ridgetop wind. Treeline temperature 0 °C. Freezing level 1500 m.
Thursday
Partly cloudy. 20 to 30 km/h southeast ridgetop wind. Treeline temperature +6 °C. Freezing level 2200 m.
Friday
A mix of sun and cloud. 20 to 40 km/h southwest ridgetop wind. Treeline temperature +4 °C. Freezing level 1900 m.
More details can be found in the Mountain Weather Forecast.
Terrain and Travel Advice
- Carefully evaluate steep lines for wind slabs.
- Pay attention to cornices and give them a wide berth when traveling on or below ridges.