US, Canada: Adverse winter weather forecast across northern US and central Canada through at least March 11

Event

A storm system is forecast to bring snow and ice to portions of the northern US and central Canada through at least March 11. The affected area includes eastern and central Wyoming, far western Nebraska, southwestern, central, and northeastern South Dakota, far southeastern North Dakota, and northern Minnesota in the US and central Ontario in Canada.

Government Advisories
As of March 10, the US National Weather Service (NWS) has issued winter storm warnings for eastern Wyoming, far northwestern Nebraska, far southwestern and far northeastern South Dakota, and northeastern Minnesota. Winter storm watches have been issued for the remainder of the affected area including, central and eastern Wyoming, southwestern, central, and northeastern South Dakota, far southeastern North Dakota, and northern Minnesota.

Additionally, Environment Canada has issued warnings for heavy snowfall and freezing rain for central Ontario. Authorities will likely issue new alerts or update existing advisories as the winter storm transits the region over the coming day.

Hazardous Conditions
The latest forecast guidance indicates that widespread accumulations of 10-20 cm (4-8 inches) are expected across Ontario. Additionally, accumulations of 8-20 cm (3-8 inches) are possible across the northern US. Lesser accumulations are possible where sleet and freezing rain mix with the snow and the precipitation are less intense. In addition to the heavy snow, strong wind gusts will likely lead to periods of blowing and drifting snow. Blizzard conditions are possible. Sporadic power outages are possible throughout the affected area.

Transport
The inclement weather will likely cause ground and air transport disruptions across the affected area through at least March 11. Traffic and commercial trucking delays are possible along regional highways. Difficult and potentially dangerous driving conditions are also likely on secondary and rural roadways in the affected states as maintenance crews prioritize clearing major routes. Authorities could close stretches of highway if driving conditions become too hazardous. Gusty winds may threaten to topple high-profile vehicles throughout the affected area. Heavy wet snow and strong winds could bring down power lines and trees with foliage. Flight delays and cancellations are likely due to ground stops and deicing operations at regional airports.

Advice

Monitor local media for updated weather information. Verify road conditions before driving in areas where heavy snowfall is forecast. Allow extra time to reach destinations in these areas and carry an emergency kit and warm clothes if driving is necessary, especially on secondary or rural routes that could become impassable. Plan accordingly for delivery delays if routing shipments by truck through the affected area through at least March 11. Confirm flights. Charge battery-powered devices in the case of prolonged electricity outages.

Resources

US National Weather Service
US Road Conditions
Meteorological Service of Canada