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Avalanche Forecast

Dec 12th, 2016–Dec 13th, 2016
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: North Columbia.

If the wind picks-up, new reactive wind slabs may form

Confidence

Moderate - Wind speed and direction is uncertain on Tuesday

Weather Forecast

Tuesday: Clear skies / Light north wind / Alpine temperature of -17Wednesday: Sunny with cloudy periods / Light south wind / Alpine temperature of -10Thursday: Mix of sun and cloud / Light to moderate northerly wind / Alpine temperature -8

Avalanche Summary

In recent days, a few skier triggered wind slabs size to 1.0 were reported at treeline and in the alpine.

Snowpack Summary

In most areas there is 30-50 cm of recent low density storm snow that has stayed unconsolidated except where it has been transported into wind slabs. The surface snow has been facetting due to the cold temperatures, and some surface hoar has been developing in isolated areas. The mid-pack has been reported to be well settled above above a crust that was buried in mid-november. This crust may be buried less than a metre to close to 2 metres deep, depending on elevation and previous exposure to winds. Snowpack tests on the crust have shown variable results from sudden to no result. Professionals continue to monitor this crust and are watching for facet development above and below that may increase reactivity. The basal layers of the snowpack continue to be reported to be moist in some of the deeper snowpack areas of the region.

Avalanche Problems

Wind Slabs

Wind slabs are reported to exist at treeline and in the alpine. Watch for conditions that change with aspect and elevation.
Dig down to find and test weak layers before committing to a line.Be cautious as you transition into wind affected terrain.Avoid travelling in areas that have been reverse loaded by winds.

Aspects: All aspects.

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2