Canada: Adverse winter weather forecast across much of southern Alberta through at least early April 16

Adverse winter weather is forecast over much of southern Alberta through at least early April 16. A cold front moving across the region is expected to bring heavy snowfall from late April 15 through early April 16. Snowfall accumulations of 5-20 cm (2-8 inches) are possible across the affected area, with higher accumulation possible on the eastern slopes of the Rocky Mountains. Hazardous travel conditions are likely due to slippery roads and reduced visibility caused by blowing snow.

As of April 15, Environment Canada has issued red snowfall warnings (the highest level on a three-tier scale) for western parts of the affected area along the border with British Columbia. as well as an additional red snowfall warning for Highway 93 from Lake Louise to the Saskatchewan River. A special weather statement for rain transitioning to snow is in place across the rest of the affected area. Officials could update and extend the coverage of weather alerts over the coming hours.

Lesser snow accumulations 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 especially likely on secondary and rural roads, as maintenance crews prioritize clearing major routes. Authorities will probably close stretches of highways if driving conditions become too hazardous. Gusty winds will threaten to topple high-profile vehicles throughout the affected areas. As a precaution, mountain passes and tunnels will likely be closed during periods of intense snowfall. The disruptive weather will probably 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.