Jasper

We are cautiously gaining confidence in the snowpack; dig and investigate persistent weak layers before committing to slopes. Reactive wind slabs are building in the alpine. Identify features of concern and avoid recent wind loading.

Great skiing can be found at all elevations.

Moderate

• We are uncertain about how quickly persistent slabs are gaining strength.

The field team noted a natural size 1.5 wind slab avalanche in the Boundary Paths, a cross-loaded alpine feature.

Snowfall this week has accumulated 15cm and is being redistributed by West winds. A prominent crust was formed during the March 20 Atmospheric River, which brought 100mm of snow and rain to the Icefields region. This crust is 10cm thick at valley bottom and tapers out by 2300m. The Jan 24 PWL of crust and facets is buried 80 to 120cm. The lower snowpack is well consolidated with facets near the ground.

Snow depths are 150-220cm along the Parkway and 60-140cm in the Maligne area.

Expect cloudy weather and a chance of flurries on Tuesday. Light Westerly winds with a daytime high of -7° C at 2200 m.

Light winds Wednesday and Thursday will bring snow, with up to 10 cm accumulating in alpine areas and freezing levels rising to 2100 m.

• Pay attention to the wind; once it starts to blow, sensitive wind slabs are likely to form.
• Uncertainty is best managed through conservative terrain choices.
• If you are increasing your exposure to avalanche terrain, do it gradually as you gather information.