Avalanche Forecast
Issued: Mar 27th, 2021 4:23PM
The alpine rating is , the treeline rating is , and the below treeline rating is Known problems include Wind Slabs, Deep Persistent Slabs and Loose Dry.
Barb Sharp,
The Icefields Parkway is anticipated to be closed Sunday afternoon-evening in the Parkers Ridge Area. Check 511 Alberta.
Be aware that significant snowfall, winds and warm temperatures may wake up deep buried weak layers resulting in large avalanches.
Summary
Weather Forecast
30cm of snow is forecasted for the next 24h with moderate to strong S-SW winds, and freezing levels at 1500m. A mix of sun and cloud, cooler temperatures with freezing levels at valley bottom and light to moderate ridge top winds are expected on Monday.
Snowpack Summary
Up to 30cm of new snow with convective flurries and moderate W-SW winds have redistributed the low density, new snow over previous surfaces such as hard windslab and variable crusts at TL/ALP elevations. The snow pack varies throughout the region from strong supportive snow in deeper areas to weak facetted snow in the shallow areas.
Avalanche Summary
1 size 2 slab avalanche was observed from steep alpine terrain on a NE asp.
Confidence
Intensity of incoming weather systems is uncertain
Problems
Wind Slabs
Recently formed wind slabs can be found in lee features near ridge crests, and in cross-loaded gullies.
- Be alert to conditions that change with elevation.
- Be careful with wind loaded pockets, especially in steep confined alpine terrain.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Deep Persistent Slabs
Forecasted new snowfall, warm temperatures and moderate to strong winds may be the triggers that wake up this layer.
- Be alert to conditions that change with elevation.
Aspects: All aspects.
Elevations: Alpine, Treeline.
Likelihood
Expected Size
Loose Dry
30 cm of snow is forecasted in the next 24h. Use caution in exposed or confined features where small avalanches can have high consequences.
- Be careful of loose dry power sluffing in steep, confined or exposed terrain.
Aspects: All aspects.
Elevations: Alpine.
Likelihood
Expected Size
Valid until: Mar 28th, 2021 4:00PM
