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Archived

Avalanche Forecast

Mar 27th, 2021–Mar 28th, 2021
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
3: Considerable
The avalanche danger rating at treeline will be considerable
Below Treeline
2: Moderate
The avalanche danger rating below treeline will be moderate
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low
Alpine
2: Moderate
The avalanche danger rating in the alpine will be moderate
Treeline
2: Moderate
The avalanche danger rating at treeline will be moderate
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Jasper.

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.

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

Avalanche 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: Likely

Expected Size: 1 - 2

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: Unlikely - Possible

Expected Size: 1.5 - 3

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: Possible - Likely

Expected Size: 1 - 1.5