Environment Canada has issued an Extreme Cold Warning for North Bay, Powassan, Mattawa, West Nipissing and French River.

The national meterological service reports a prolonged period of very cold wind chills is expected with wind chill values of minus 40 to minus 45 are expected tonight over much of Northern Ontario.

Don’t expect much relief on Saturday as this bitterly cold Arctic airmass will remain in place through the weekend.

Risks are greater for young children, older adults, people with chronic illnesses, people working or exercising outdoors, and those without proper shelter.

Dress warmly. Dress in layers that you can remove if you get too warm. The outer layer should be wind resistant. Cover up. Frostbite can develop within minutes on exposed skin, especially with wind chill.

Remember, if it’s too cold for you to stay outside, it’s too cold for your pet to stay outside.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@canada.ca or tweet reports using #ONStorm.