The polar vortex's blast of Arctic air from Canada brought the season's coldest weather to the majority of U.S. The vortex is ...

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

According to the National Weather Service, a polar vortex will impact most of the country this weekend, here is what you need ...

Some areas of the U.S. may see temperatures as low as -20 or -30 degrees early next week as arctic air from Siberia rolls in.

A polar vortex is hitting most of the country in the next few days. What does it mean? How to protect yourself and pets ...

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

An extreme cold wave from the Arctic is threatening the United States. Historically low temperatures could affect several regions, according to weather forecasts. This cold wave, fueled by large-scale ...

A lobe of the Polar Vortex is going to swing through Ontario just north of Michigan. The upper-air forecast gives us an easy look at this strong winter player. The general meaning of the Polar ...

Here's the latest on the winter storm. A historic winter storm is poised to produce potentially record-breaking snows from ...

Still, several Colorado school districts will start late on Tuesday as the state waits out the last of subzero temperatures.

A powerful Arctic outbreak tied in part to the polar vortex is set to send temperatures by next week tumbling down to as cold ...