Canada: Adverse winter weather forecast across southwestern areas through at least Jan. 10 /update 1

Adverse winter weather is forecast over most of British Columbia, Alberta, and Saskatchewan through at least Jan. 10. Hazardous travel conditions are likely due to slippery roads and reduced visibility. As of late Jan. 8, Environment Canada has issued the following warnings:

• Red snowfall warnings (the highest level on a three-tier scale): central and southern British Columbia, west central Alberta, and central Saskatchewan; up to 20 cm (8 inches) of snow is forecast.

• Red wind warnings: Vancouver Island

• Red extreme cold warnings: northern Alberta and northwestern Saskatchewan

Officials could update and extend the coverage of weather alerts over the coming hours.

Snow accumulations are likely across the parts of the affected area. Lesser snowfall totals are possible where sleet and freezing rain mix with snow. In addition to the heavy snow, strong wind gusts could lead to periods of blowing and drifting snow. Blizzard conditions are possible. Sporadic power outages may occur throughout the affected area.

The inclement weather will likely cause widespread ground and air transport disruptions across the affected areas. Traffic and commercial trucking delays are probable along regional highways. Dangerous and challenging driving conditions are likely, especially on secondary and rural roads, as maintenance crews prioritize clearing major routes. Authorities will likely close stretches of highways if driving conditions become too hazardous. Gusty winds will threaten to topple high-profile vehicles throughout the affected areas. Mountain passes and tunnels will probably be closed as a precaution during periods of intense snowfall. The disruptive weather will likely cause delays and cancellations at airports in the affected regions. Heavy, wet snow and strong winds could bring down power lines and trees with foliage.