Jan 20, 2025 · A polar vortex dipping down from Siberia is bringing a cold front with frigid temperatures to millions Americans. See maps of the arctic blast.

Dec 31, 2024 · Forecasts indicate that the Arctic polar vortex will deliver frigid winds across large portions of the U.S. in the new year.

Jan 7, 2025 · Arctic winds from a powerful polar vortex are sweeping across several states, bringing dangerously cold temperatures and severe weather conditions. It comes as the U.S. is potentially set to...

Jan 20, 2025 · According to the NWS, the Arctic polar vortex is a powerful band of west-to-east winds that develops in the stratosphere, about 10 to 30 miles above the North Pole, during the winter season.

Millions of people across the U.S. will experience subzero or below-average temperatures in the coming days as a polar vortex coming from Siberia will usher in a new cold front.

Jan 21, 2025 · The jet stream typically acts as a barrier to keep the polar vortex contained near the Arctic, but at times, some of the vortex can break off or move south, bringing unusually cold weather into ...

Jan 16, 2025 · The polar vortex strength, as measured by the speed of the winds around the 60N latitude circle and 10 hPa pressure level, remains stronger than average, and is currently forecast by most models to return to near-record strong wind speeds into early February.

Jan 16, 2024 · Based on the recent forecast models, the full breakdown of the polar vortex into a major sudden stratospheric warming is expected to be brief. After that, the forecast average suggests the vortex will cease its shenanigans and strengthen again back to its normal speed.

Dec 5, 2023 · The polar vortex on December 4, 2023. Because the air within the polar vortex is generally much colder than the air outside of it, the polar vortex shows up on maps of atmospheric thickness ("geopotential height") as a region of low thickness. The 10-hectoPascal geopotential height is the altitude at which the pressure is 10 hectoPascals.

Jan 17, 2025 · A polar vortex of brutally cold air that normally circles the Arctic will be spilling southward, starting this weekend and into next week, bringing below-freezing temperatures to many parts of the ...