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Archived

Avalanche Forecast

Apr 8th, 2019–Apr 9th, 2019
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
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
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

Regions: Jasper.

A winter snowpack still exists at upper elevations. Be diligent in your hazard management as you transition into the alpine.

Weather Forecast

Unsettled air from a series of low pressure systems hitting the south and then north coast will give several waves of snow flurries, with up to 15cm of accumulation by the end of the week. Tuesday: Cloudy with sunny periods. Flurries in the Icefields area (up to 5cm). Treeline temps: Low -3 C. High 1 C. Ridge wind light NW. Freezing level: 2300m.

Snowpack Summary

Recent small snowfalls are settling quickly, over a melt-freeze crust that extends in to the alpine on all apsects. Small windslabs can be found on lee slopes. A winter snowpack remains on alpine N aspects, with facets under an 20-50cm slab in isolated areas in the Icefields area and further South, and basal depth hoar in shallow snowpack areas.

Avalanche Summary

No new activity has been observed or reported.

Confidence

Forecast snowfall amounts are uncertain

Avalanche Problems

Wind Slabs

Pockets of windslab in immediate lees will be buried by incoming new snow, making them more difficult to manage.
Be careful with wind loaded pockets, especially near ridge crests and roll-overs.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Persistent Slabs

A weak layer of facets buried 30-50cm down is persisting in some areas. This is more prevalent at the Columbia Icefields & South.
Whumpfing, shooting cracks and recent avalanches are all strong inicators of unstable snowpack.Carefully evaluate big terrain features by digging and testing on adjacent, safe slopes.

Aspects: North, North East, East.

Elevations: Alpine.

Likelihood: Unlikely - Possible

Expected Size: 1.5 - 2.5