These severe cold events occur when the polar jet stream – the familiar jet stream of winter that runs along the boundary ...

Polar vortex again taking aim at Florida While ... Some young citrus trees were split, compromising their health and future productivity, the analysts said. Joyner, of industry group Florida ...

The "polar vortex" is a large low-pressure system that lives around the Arctic Circle but occasionally can be split up and send extremely cold weather to lower latitudes like New York. If the ...

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Every once in a while, the polar vortex gets split into two centers of circulation, one of which can sink southward into North America. This lasts a couple of weeks before it becomes a single ...

When there are disturbances in which the Jet Stream weakens, it can become wobbly. This allows the cold air to plunge southwards. A disrupted polar vortex does not happen every year. Very much so what ...

Imagine the polar vortex as a giant, icy whirlpool far above the Earth, keeping frigid Arctic air contained near the north ...

We start the following work week with a polar vortex. This will bring in unseasonably cold air to the region and wind chill ...

WASHINGTON — We are in the middle of a blast of extreme cold weather in D.C. The polar vortex has shifted, spilling cold air ...