January is about to get frightfully colder in parts of the US and it’s time for the first polar vortex of 2025. While such weather phenomena are common at times, the upcoming polar vortex ...

The Arctic polar vortex, as described by the National Weather Service (NWS), is a strong band of west-to-east winds that forms in the stratosphere, 10 to 30 miles above the North Pole, during winter.

Most of the US will enjoy milder temperatures on Thursday, but the warmup will be brief as a polar vortex will send temperatures tumbling below freezing for most of the nation starting this weekend.

When the polar vortex gets weaker, or breaks up, it unleashes cold air to the south. People bear the cold in New York City, December 23, 2024. Selcuk Acar/Anadolu via Getty Images ...

A blast of arctic air from Canada has brought the season's coldest weather to most of the United States. The system, known as a polar vortex, is forecast to bring subzero temperatures to the ...

A graphic depicting the science behind a polar vortex. Forecasts suggest it will bring cold air to much of the U.S. in early 2025. NOAA. During winter in the Northern Hemisphere, the polar vortex ...

Dust off the parkas. After a mild December, the polar vortex is set to send an arctic blast into the US later this week. “That polar jet will be pushed further south, and guess what that does ...

The next round of bitter cold was set to envelop the southern U.S. on Tuesday, after the first significant winter storm of the year blasted a huge swath of the country with ice, snow and wind.

The polar vortex is about to split, and a piece of it may be paying a visit to the central and eastern U.S. within the next week or two. Is US safer from guns? Start the day smarter ☀️ Science ...

The coldest air of the season will be diving south, not leaving anyone out. Every single state in the lower 48 US will be below freezing Monday morning. This includes 86% of the country and 235 ...

A polar vortex is bringing life-threatening temperatures to the US, with 55 million Americans set to experience below-zero temperatures. Emergency declarations have been issued in three Midwestern ...