Jan 20, 2025 · Polar vortex brings dangerous cold 02:16. With the Northern Hemisphere well into the winter months, it may seem like temperatures are cold enough already.

Jan 16, 2025 · Polar vortex to blast 30 states with life-threatening cold: 'Be prepared' The FOX Forecast Center said temperatures will plummet as much as 45 degrees below average in spots, leading to below-zero temperatures across at least 20 states, from the Plains to the Great Lakes and interior Northeast.

Jan 21, 2025 · 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 ...

Dec 31, 2024 · AccuWeather's long-range experts predict that Arctic air surges could cause temperatures across much of the eastern and central United States to drop 10 to 20 degrees or more below the...

3 days ago · How atmospheric thickness (left) and surface temperature (right) compare to the 1958-2023 average for the 30 days after the 48 observed polar vortex intensification events from 1958-2023. On average, intensification events are followed by lower-than-average thickness (purple) at the 500 hectoPascal pressure level, or about 3.5 miles (5.5 km) in ...

3 days ago · A strong polar vortex — and one that stays swirling tightly above the pole — depends on a dramatic contrast between frigid polar temperatures and milder conditions across midlatitudes. As ...

Jan 3, 2025 · During the polar vortex, temperatures could reach 12-25°F below average in some states, according to AccuWeather. “This could end up being the coldest January since 2011 for the U.S. as a...

Dec 31, 2024 · Beginning next week, the polar vortex will likely trigger even colder air across the eastern half of the U.S. The polar vortex lives in the upper atmosphere and is located near the North Pole in the arctic. When the polar vortex is strong, it locks the cold air in the arctic.

Dec 31, 2024 · The plunge will bring wind chills across the Midwest dipping below zero, “exceptionally cold” temperatures down to 20 degrees below average in some places, and freezing conditions setting...

Jan 16, 2024 · The latest forecast says a major disruption of the polar vortex is on its way, but the stratosphere has been acting up for a while. Our bloggers explain what it might mean for U.S. weather.