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Avalanche Forecast

Jan 7th, 2019–Jan 8th, 2019
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
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

Regions: Lizard-Flathead.

Storm snow from last week has been redistributed into pockets of wind slab at tree line and in the alpine.

Confidence

Moderate - Due to the number of field observations

Weather Forecast

MONDAY NIGHT: Clear periods, light to moderate west winds, alpine temperature -9 CTUESDAY: Cloudy with sunny periods, Light southwest winds, alpine temperature -6 CWEDNESDAY: Mainly cloudy with flurries, moderate southwest winds, alpine temperature -2 C, possible temperature inversionTHURSDAY: Mainly cloudy with flurries, light to moderate southwest winds, alpine temperature -4 C, freezing level 1500m

Avalanche Summary

The most recent report of avalanche activity for the region was a natural size 2 wind slab avalanche on a north aspect in the alpine on Sunday.

Snowpack Summary

Around 60 to 80 cm of snow fell  above 1500 m in the region late last week. The snowfall was followed up with moderate to strong southwest winds that have since redistributed some of the new snow into alpine and treeline lee terrain. In sheltered areas around treeline, this snow possibly overlies a weak layer of feathery surface hoar crystals. Below 1500 m, the precipitation largely fell as rain, so expect see a crust at or near the snow surface.In the east side of the region near Corbin, a persistent weak layer that formed in early December may still be found 80 to 120 cm deep. This layer mostly consists of sugary faceted snow with some isolated areas also containing feathery surface hoar crystals. While professionals are still tracking this layer, it has not been reactive for some time now.There is a mix of crusts and facets that formed in late October/early November near the bottom of the snowpack. This layer may only be an issue on steep slopes where the snowpack is shallow.

Avalanche Problems

Wind Slabs

The snow from late last week has been redistributed into the lee of terrain features by steady southwest winds. Note that in the east of the region there is still potential that triggered slabs could step down to deeper weak layers.
Be careful with wind loaded pockets, especially near ridge crests and roll-overs.Be cautious as you transition into wind affected terrain.Extra caution needed around cornices with current conditions.

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

Elevations: Alpine, Treeline.

Likelihood: Possible

Expected Size: 1 - 2