Avalanche Forecast
Issued: Apr 8th, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Storm Slabs and Cornices.
kdevine,
Avalanche Canada
Snowfall amounts may vary significantly across the region, in areas that see less than 15 cm of new snow on Friday, the danger is likely moderate.
In areas receiving heavy snowfall, storm slabs are expected to become increasingly reactive throughout the day.
Summary
Confidence
Weather Forecast
Thursday night - Cloudy with clear periods / moderate southwest wind / alpine low temperature near -5 / freezing level 500 m
Friday - Snow, 20-25 cm / strong southwest wind / alpine high temperature near -2 / freezing level 900 m
Saturday - A mix of sun and cloud / light to moderate northwest wind / alpine high temperature near -4 / freezing level 1000 m
Sunday - Mainly sunny / light northwest wind / alpine high temperature near -1 / freezing level 1600 m
Avalanche Summary
Fresh storm slabs are expected to build and become increasingly reactive throughout the day.
We haven't received many observations for the South Coast region in the past few days. If you get out, please consider sharing your observations to the Mountain Information Network to help us know what conditions are like.
Snowpack Summary
20-25 cm of new snow is expected to fall on Friday, bringing this week's storm snow total to about 30-40 cm. Strong southwest winds are expected to accompany the new snow, likely forming fresh and reactive slabs in many areas.
The recent storm snow sits on a crust on sun-exposed aspects, and on all aspects below about 1400 m. It likely fell on either wind slabs or soft snow on north aspects above 1400 m.
Cornices are large and looming along ridgelines. Their release is unpredictable, requiring a large berth if you're travelling above or below them.
Terrain and Travel
- Pay attention to cornices and give them a wide berth when traveling on or below ridges.
- Choose conservative terrain and watch for clues of instability.
- Watch for changing conditions today, storm slabs may become increasingly reactive.
Problems
Storm Slabs
20-25 cm of new snow with strong southwest wind is expected during the day on Friday, likely forming slabs that may become increasingly reactive throughout the day.
Aspects: All aspects.
Elevations: All elevations.
Likelihood
Expected Size
Cornices
Cornices are large and looming along many ridgelines and have likely grown with the recent snow and wind.
Aspects: North, North East, East, West, North West.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 9th, 2021 4:00PM
