Avalanche Forecast
Issued: Mar 31st, 2022 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs and Cornices.
TRettie,
Avalanche Canada
Use extra caution at and above treeline where forecasted precipitation will likely fall as snow and form new storm and wind slabs.
Summary
Confidence
Weather Forecast
Thursday night: 5 to 10 cm of new snow expected with light south winds. Freezing level falling to 700 m.
Friday: Stormy with 10 to 20 cm of new snow expected. Highest snowfall amounts in the south of the region. Moderate to strong southwest winds with freezing levels rising to 1000 m.
Saturday: Stormy with around 10 cm of new snow expected with strong south winds. Freezing level around 1100 m.
Sunday: cloudy with up to 10 cm of new snow and light to moderate south winds. Freezing level around 1000 m.
Avalanche Summary
In the north of the region explosive control triggered storm slabs up to size two.
Earlier in the week natural cornice falls and wet loose avalanches were observed throughout the region.
Snowpack Summary
New storm and wind slabs are expected to form throughout the day on Friday. A crust can be found on all aspects and elevations at or near the surface except high north terrain. In the north of the region, small surface hoar may be found above this crust. This crust will likely become moist at lower elevations as the freezing level rises.
A weak layer of surface hoar from mid-March buried 70-120 cm deep can still be found but is considered dormant in the Terrace area. In the far north of the region, it produced large avalanches as recently as Sunday.
Terrain and Travel
- Watch for newly formed and reactive wind slabs as you transition into wind affected terrain.
- Watch for fresh storm slabs building throughout the day.
- Use extra caution around cornices: they are large, fragile, and can trigger slabs on slopes below.
Problems
Storm Slabs
New storm and wind slabs will form throughout the day on Friday. Size and sensitivity to triggering will be greatest near ridge crests and steep rollovers where wind loading is a factor.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Cornices
Large cornices have become weak with recent mild temperatures and are expected to remain weak on Thursday. Cornice falls have the potential to trigger large avalanches on the slopes below.
Aspects: North, North East, East, North West.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 1st, 2022 4:00PM
