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Archived

Avalanche Forecast

Mar 16th, 2015–Mar 17th, 2015
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
1: Low
The avalanche danger rating at treeline will be low
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
1: Low
The avalanche danger rating at treeline will be low
Below Treeline
1: Low
The avalanche danger rating below treeline will be low

Regions: Jasper.

Weather Forecast

Warm daytime temperatures with good overnight freezing, light alpine winds, and no snow forecasted will make for enjoyable conditions in the mountains.

Snowpack Summary

A strong rain crust forms the surface at treeline and below.  Up to 35cm of storm snow overlies a variable snowpack above treeline.  Soft wind slabs have formed on lee aspects as a result of strong SW winds.  The deep persistent weakness (basal facets and depth hoar) make up the base of the snowpack.

Avalanche Summary

No new avalanches observed.

Confidence

The weather pattern is stable

Avalanche Problems

Wind Slabs

Soft slab conditions on lee alpine aspects appear to have bonded well in most locations. Approach these features with caution and test bonding on the slope from a safe area before committing.
Be cautious as you transition into wind affected terrain.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2

Deep Persistent Slabs

Large cornices or surface avalanches are the likely trigger for this layer.
Cornices become weak with daytime heating. If triggered the storm slabs may step down to deeper layers resulting in large avalanches.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Unlikely - Possible

Expected Size: 2 - 3