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Archived

Avalanche Forecast

Mar 30th, 2012–Mar 31st, 2012
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
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
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
2: Moderate
The avalanche danger rating below treeline will be moderate

Regions: Jasper.

One size 3 avalanche was noted today off an alpine ridgetop likely cornice triggered. Another 15cm is expected Friday night with a possible E flow Saturday evening delivering additional accumulations at Maligne and Icefields.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Timing, track, or intensity of incoming weather system is uncertain on Saturday

Avalanche Problems

Wind Slabs

Thursday night Maligne received 30cm and Icefields 5-20cm. Another 10-15cm may arrive Friday into Saturday. Winds continue to build slabs and add load potentially to a slippery crust from earlier sun effect particularly on steep solar aspects.

Aspects: North, North East, East, South East, South.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 2 - 3

Persistent Slabs

The buried surface hoar layer 70-120cm down remains a concern in areas that have not avalanched. The layer is still being observed at treeline and below treeline locations yet 'generally' layers are bridging it above. Cautious of shallow locations.

Aspects: All aspects.

Elevations: All elevations.

Likelihood: Unlikely - Possible

Expected Size: 2 - 4

Loose Wet

Recent cloud cover has reduced daytime heating. Still be cautious if the sun pokes out as avalanche activity will increase quickly particularly on steep S or W aspect rock bluffs or gullies.

Aspects: North, North East, East.

Elevations: All elevations.

Likelihood: Possible - Likely

Expected Size: 1 - 3