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Avalanche Forecast

Apr 10th, 2013–Apr 11th, 2013
Alpine
3: Considerable
The avalanche danger rating in the alpine will be considerable
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
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
3: Considerable
The avalanche danger rating in the alpine will be considerable
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

Regions: South Coast.

Confidence

Fair - Intensity of incoming weather is uncertain on Friday

Weather Forecast

Thursday: Very light snowfall with generally overcast skies / Light southwest winds / Freezing level at 1300mFriday: Light snowfall becoming moderate in the afternoon / Strong southwest winds / Freezing level at 1100mSaturday: Light snowfall / Light northwest winds / Freezing level at 1100m

Avalanche Summary

Avalanche observations have been limited in the last few days. I would expect a good round of storm slab activity in the wake of snow and wind on Wednesday.

Snowpack Summary

Moderate to locally heavy amounts of snow fell on Wednesday. At lower elevations rain continued to saturate the snowpack. The storm was accompanied by moderate to strong south/southwest winds which left variable snow distribution in exposed areas near ridgetop with dense wind slabs forming in lee and cross-loaded features. Up to 75cm below the surface you will likely find moist snow or a melt-freeze crust (depending on elevation) from last week's sunny weather. Spotty surface hoar on high north facing terrain may also exist at the same interface. Cornices are very large and could pop off with continued mild temperatures.

Avalanche Problems

Storm Slabs

Dense wind slabs have formed on slopes in the lee of ridge crests and in cross loaded features at upper elevations. In isolated terrain, storm snow avalanches may step down to a crust or surface hoar buried last week.
Stay off recent wind loaded areas until the slope has had a chance to stabilize.>Choose conservative lines and watch for clues of instability.>

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible - Likely

Expected Size: 1 - 5

Loose Wet

With spring temperatures, loose wet avalanches are possible in steep terrain at lower elevations.
Watch for wet loose or slab activity with recent rain and warm temperatures.>

Aspects: All aspects.

Elevations: Alpine.

Likelihood: Possible - Likely

Expected Size: 1 - 3