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Archived

Avalanche Forecast

Feb 18th, 2013–Feb 19th, 2013
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: Kootenay Boundary.

Confidence

Good

Weather Forecast

Synopsis: Relatively benign weather is anticipated through the forecast period.Tuesday and Wednesday: Flurries. Calm. Freezing level around 900 m.Thursday: Clearing, with sunny breaks likely. Light southwest winds. Freeezing level around 900 m.

Avalanche Summary

One small slab avalanche was reported on Sunday in alpine terrain. Several small loose snow avalanches have been reported in steep terrain.

Snowpack Summary

10-20 cm of recent snowfall (possibly a little more near Kokanee Glacier Park) overlies a recent layer of surface hoar buried around Feb 12. We have had some reports this layer contains crystals up to 30mm in some locations. This large size of crystal increases the likelihood this layer will present problems as it becomes more deeply buried. Expect to see wind slabs in exposed areas. Two previous buried surface hoar/facet/sun crust layers from Feb 4th and Jan 23 are still being tracked by professionals but have not been reactive recently. They can be found approximately 30 cm and 50 cm below the surface, respectively. These layers may be worth investigating on a safe, representative adjacent slope if you are considering riding in aggressive terrain.

Avalanche Problems

Wind Slabs

Generally light but locally gusty winds have loaded lee features on a potentially weak interface.
Watch freshly wind loaded features in steep terrain.>

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 4