Polar vortex split brings the freeze. How long will it stick around? Several rounds of bitter cold are expected in the eastern U.S. through early March, after a stratospheric warming event disturbs ...

There is a major weather pattern change underway across the U.S. As we get into next week, the storm track looks really interesting. Major upper-air pattern changes are quite normal. Sometimes we have ...

Wind chills are below zero degrees throughout the First State as a polar vortex grips the region. Wilmington, Dover and Lewes are all reading wind chills below zero degrees as bitter cold winds from ...

View post: Winter Storm Warnings for 26 Inches of Snow in 8 States Emerge A cold front will bring plunging temperatures and snow to the Northeast this week. Polar vortex disruptions, caused by Sudden ...

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A weakened polar vortex is allowing frigid air to spill into portions of the U.S. this week, forecasters say. The National Weather Service Weather Prediction Center (WPC) warned in a Thursday update ...

Above: A Von Karman vortex street downwind of the Canary Island chain in the eastern Atlantic Ocean off the coast of Africa on Feb. 27, 2015. Image credit: NASA Worldview. Editor's note: Meteorologist ...

A warming Arctic can stretch the polar vortex, a high-altitude air ribbon, one says. The “wobble” can disrupt the jet stream, causing extreme cold in the East. By Eric Niiler If the planet is getting ...

Forecast maps show states facing another round of snow later this week as frigid Arctic air is expected to hit the U.S. Northeast. An Arctic front will push from the Great Lakes into the Northeast ...