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Archived

Avalanche Forecast

Mar 7th, 2012–Mar 8th, 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
3: Considerable
The avalanche danger rating below treeline will be considerable
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
3: Considerable
The avalanche danger rating below treeline will be considerable
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.

The surface hoar under the new storm snow remains touchy. People and solar effect are two likely triggers for new avalanches right now.

Weather Forecast

Snowpack Summary

Avalanche Summary

Confidence

Freezing levels are uncertain

Avalanche Problems

Persistent Slabs

The recent widespread avalanche cycle was the result of our Feb.14 surface hoar layer failing below the rapid load of new snow. Natural activity has declined partly because so many areas have already avalanched. Areas that have not are suspect!

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 4

Storm Slabs

Strong solar radiation is tightening the recent storm snow on solar aspects into a cohesive slab. Forecast warm temps with continued solar effect is expected. Ice climbers on solar aspects should expect soft slabs and power sloughing in the PM.

Aspects: North, North East, East.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 3

Wind Slabs

Continued Mod-strong NW winds are creating wind slabs primarily in the alpine but also in exposed treeline locations. These slabs will be reactive even if they do not have preserved surface hoar beneath them.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 3