Avalanche Forecast
Issued: Apr 1st, 2021 4:00PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs and Cornices.
MBender,
Avalanche Canada
Watch for lingering wind slabs at upper elevations and take a wide berth around cornices.
Summary
Confidence
Weather Forecast
Thursday Night: Cloudy. Ridgetop wind light to moderate from the southwest. Alpine temperatures near -6 and freezing levels 1200 m.
Friday: Cloudy with sunny breaks. Ridgetop wind light from the southwest. Alpine temperatures -5 and freezing levels 1000 m.
Saturday: Flurries, accumulation 5-15 cm. Moderate ridgetop wind from the southwest. Alpine temperatures -4. Freezing level 1200 m.
Sunday: Mix of sun and cloud with alpine temperatures near -3. Ridgetop wind light from the north and freezing levels 1300 m.
Avalanche Summary
Avalanche reports from the past few days have been limited to thin wind slabs to size 1.5 in the alpine.
On Tuesday, reports indicated that small loose wet avalanches occurred from steep rocky terrain. Cornices also became weak and failed with daytime warming. No slabs were reported from the slopes below.
Snowpack Summary
Snow from earlier in the week has been redistributed by southwest winds at upper elevations.
The recent snow sits above a variety of old snow surfaces comprising mostly of a widespread melt-freeze crust with the exception of high north-facing terrain where it may be sitting on small surface hoar crystals. A melt-freeze crust exists at treeline and wet snow is likely found below 1100 m.
Cornices along ridgelines are large, and the likelihood of them failing will increase when the sun comes out.
Terrain and Travel
- Pay attention to cornices and give them a wide berth when traveling on or below ridges.
- Seek out sheltered terrain where new snow hasn't been wind-affected.
Problems
Wind Slabs
Wind slabs from snow earlier in the week accompanied by strong wind in exposed lee terrain may still linger in high elevation terrain.
Aspects: North, North East, East, North West.
Elevations: Alpine.
Likelihood
Expected Size
Cornices
Cornices are large and looming along many ridgelines, and have likely grown with the recent snow and wind. They require respect and a large berth if you're travelling above or below.
Aspects: North, North East, East, West, North West.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Apr 2nd, 2021 4:00PM
