Avalanche Forecast
Issued: Apr 3rd, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs.
mconlan,
Avalanche Canada
A storm may increase avalanche danger for parts of the region. Danger will be LOW until at least ~10 cm of snow accumulates. Watch for changing conditions over the course of the day.
Summary
Confidence
Moderate - Uncertainty is due to the track & intensity of the incoming weather system.
Weather Forecast
SATURDAY NIGHT: Increasing clouds, 40 km/h southwest wind, alpine temperature 0 C, freezing level 2100 m.
SUNDAY: Cloudy with snowfall, accumulation 5 to 15 cm with local amounts up to 20 cm possible, 20 km/h southwest wind, alpine temperature -4 C, freezing level 1600 m.
MONDAY: Clear skies, 10 km/h northwest wind, alpine temperature 1 C, freezing level rising to 2200 m.
TUESDAY: Clear skies, 10 km/h southwest wind, alpine temperature 1 C, freezing level 2300 m.
Avalanche Summary
Looking forward, avalanche activity may spike during Sunday as the new snow accumulates, particularly where it overlies a hard melt-freeze crust.
Snowpack Summary
New snow is forecast at higher elevations for Sunday with elevated wind. The snow will fall onto a hard melt-freeze crust everywhere except above 2000 m on north aspects, where it will fall onto previously wind-affected snow. Below the rain-snow line, rain will soak an already wet snowpack.
Terrain and Travel
- Watch for fresh storm slabs building throughout the day.
- Wind slabs are most reactive during their formation.
- Closely monitor how the new snow is bonding to the crust.
- Make observations and assess conditions continually as you travel.
Problems
Storm Slabs
Storm slabs may develop as the day progresses. The snow may not bond well to underlying surfaces, particularly where it sits on a hard melt-freeze crust. Wind slabs have the potential to form in lee terrain features if the snow falls with elevated wind speed.
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 4th, 2021 4:00PM
