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Archived

Avalanche Forecast

Feb 17th, 2013–Feb 18th, 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: Banff Yoho Kootenay.

10 cm of new snow with little wind improved the travel conditions but did very little to increase the avalanche danger. Caution is still advised for older windslabs lingering on steep open slopes.

Weather Forecast

A ridge of high pressure will build in for Monday, followed by a weak front with little precipitation Tuesday and colder weather through till the end of the week.

Snowpack Summary

Approximately10 cm of new snow fell with very little wind. This was not enough to really increase the avalanche danger. There are still some lingering windslabs and some ripe cornices to be aware of. Shallow snowpack areas are weak.

Avalanche Summary

No new avalanche activity has been observed.

Confidence

Avalanche Problems

Cornices

Wind earlier in the week has created some ripe touchy cornices. Some older cornices are starting to cleave off as well.
Extra caution needed around cornices with current conditions.

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

Elevations: Alpine.

Likelihood: Possible

Expected Size: 1 - 3

Wind Slabs

There is still a real possibility of triggering a wind slab on the right slope. Steep unsupported slopes near ridgecrests are the most likely terrain and should be avoided.
The recent snow may now be hiding windslabs that were easily visible before the snow fell.Be careful with wind loaded pockets

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2