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Avalanche Forecast

Feb 20th, 2013–Feb 21st, 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
4: High
The avalanche danger rating in the alpine will be high
Treeline
4: High
The avalanche danger rating at treeline will be high
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: Sea To Sky.

Confidence

Fair - Intensity of incoming weather is uncertain on Friday

Weather Forecast

Thursday: Light snowfall / Moderate southwest winds / Freezing level at 900mFriday: Heavy snowfall / Strong southwest winds / Freezing level at 900mSaturday: Light snowfall / Light southwest winds / Freezing level at 700m

Avalanche Summary

We continue to receive observations of isolated small soft slabs in the alpine that are sensitive to skier triggering. Click on the link below for information on a recent slab avalanche that was reported from Rainbow mountain.Rainbow Mountain Avalanche

Snowpack Summary

On Wednesday very light snowfall covered reportedly widespread surface hoar. Relatively small pockets of wind slab which exist at higher elevations are expected to be mostly unreactive. but may be triggered by skiers in isolated pieces of terrain near ridge crest. Several crusts can be found in the snowpack, especially on solar aspects; however, reports indicate these interfaces have settled out fairly rapidly in most areas. The mid and lower snowpack layers are generally strong and well settled.Total snow depths vary from around 400 cm in the south to around 180 cm in the north.

Avalanche Problems

Wind Slabs

Light amounts of new snow combined with moderate winds are likely to form new wind slabs at treeline and in the alpine.
Avoid freshly wind loaded features.>Be cautious as you transition into wind affected terrain.>

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

Elevations: Alpine.

Likelihood: Likely

Expected Size: 1 - 3