MINNEAPOLIS, Minnesota — Our entire region is under an Extreme Cold Weather Warning until 12 p.m. Tuesday; wind chills could fall as low as -45 degrees. This Arctic blast is thanks to a polar vortex.

This blast of cold weather is due to activity of the polar vortex.

The polar vortex is a large area of low pressure, winds, and cold air surrounding both of the Earth’s poles, according to the ...

A polar vortex is a large area of low pressure and cold air that swirls around the Earth's poles ... A programmable or energy-efficient thermostat can help maintain warmth in key areas while ...

Cold air from the arctic sometimes dips southward across the American plains. What to know about the polar vortex.

According to the National Weather Service, a polar vortex "is a large area of low pressure and cold air surrounding both of the Earth’s pole ... for Reliant Energy relayed some energy-saving ...

A polar vortex is a large area of low pressure and cold air that swirls around the Earth's poles ... A programmable or energy-efficient thermostat can help maintain warmth in key areas while ...

A polar vortex is bringing arctic air into the country next week. Forecast maps show when freezing temperatures will sweep ...

The polar vortex is an area of swirling cold air in the Earth's polar regions ... Improving your home’s insulation will keep energy costs down and reduce the risk of overworking your furnace.

What are the new Aura Craft recipes? At the beginning of this Roblox game, you only have access to the four basic elements: earth, wind, fire, and water. By combining these elements, along with ...