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Archived

Avalanche Forecast

Feb 5th, 2013–Feb 6th, 2013
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
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.

Turn the bulletproof hard slab above treeline from an enemy to an ally by using it for quick travel on long flat alpine tours.Good time to go ice climbing!

Weather Forecast

Light scattered snowfalls through Thursday.  Return to more seasonal temperatures (cooling trend).  Winds moderate to strong at ridgetop.

Snowpack Summary

Any small amounts of new snow that fell in the last 48hrs was hard to find in both the Parker Ridge area and the Maligne valley. Recent strong winds have obliterated most loose snow on most aspects above treeline and left a widespread persistent hard slab on the surface, covering 50-70cm of facets.  Below treeline the midpack is weak.

Avalanche Summary

No new avalanches in Jasper or signs of instability related to the widespread persistent hard slab above treeline.

Confidence

Intensity of incoming weather systems is uncertain

Avalanche Problems

Wind Slabs

Hard persistent slabs up to 30cm thick are widespread above treeline and appear to be mostly unreactive.  Thin wind slabs may be found in immediate lee areas above treeline with the small amount of new snow and may be touchy.
Be cautious as you transition into wind affected terrain.Give cornices a wide berth when travelling on or below ridges.

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

Elevations: Alpine, Treeline.

Likelihood: Unlikely

Expected Size: 1 - 2