Meteorologists warn that the coldest burst of Arctic air this season is coming to put an icy and prolonged exclamation point on America’s winter of repeated polar vortex invasions starting this weekend. They say different weather forces in the Arctic are combining to push the chilly air that usually stays near the North Pole not just into the United States, but also Europe. On Wednesday, the average low temperature in the Lower 48 states will be just 14 degrees. Every state but Hawaii, California and Florida is likely to get a taste of wind chills of 20 degrees or colder. Meteorologists warn that the coldest burst of Arctic air this season is coming to put an icy and prolonged exclamation point on America’s winter of repeated polar vortex invasions starting this weekend. They say different weather forces in the Arctic are combining to push the chilly air that usually stays near the North Pole not just into the United States, but also Europe. On Wednesday, the average low temperature in the Lower 48 states will be just 14 degrees. Every state but Hawaii, California and Florida is likely to get a taste of wind chills of 20 degrees or colder. AP Technology and Science
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