North Columbia

Light snowfalls for Friday and more significant accumulations starting late Friday. Avalanche hazard will increasing for the weekend with new snow, strong winds and rising freezing level.

Moderate - Forecast snowfall amounts are uncertain on Saturday

THURSDAY NIGHT: Mainly cloudy with isolated flurries, snow accumulation up to 5 cm, light to moderate winds from south, alpine temperature -6 C, freezing level at valley bottom.FRIDAY: Mainly cloudy with isolated flurries, snow accumulation up to 5 cm, moderate southwest winds, alpine temperature -5 C, freezing level at 1300 m.SATURDAY: Periods of snow, accumulation ranging from 10 to 15 cm, strong to extreme winds from southwest, alpine temperature -5 C, freezing level at 1300 m.SUNDAY: Mainly cloudy with isolated flurries, snow accumulation up to 5 cm, moderate to strong west winds, alpine temperature -8 C, freezing level at 800 m.

No new avalanche was observed on Tuesday and Wednesday.

Expected snowfalls starting Thursday night will accumulate over a variety of surfaces. Those snowpack surfaces include a sun crust on solar aspects at treeline and above, faceted dry snow on north aspects and surface hoar up to 15-20 mm in sheltered and shaded areas at all elevation. New wind slabs may also form on north and northeast aspects in the alpine on Friday.The middle and lower portions of the snowpack are generally well-settled and strong.